Cannot run the project on Linux

[Coniface]

Although I can start the data server on Windows, it is impossible to run it on Linux for me. Here is the gigantic error I have, it looks to be related to the Hikari pool but the configuration is fine.

:graviton - common:processResources NO-SOURCE
:graviton - common:classes UP-TO-DATE
:graviton - common:jar UP-TO-DATE
:graviton - game:compileJava UP-TO-DATE
:graviton - game:processResources UP-TO-DATE
:graviton - game:classes UP-TO-DATE
:graviton - game:run
                 _____                     _  _
                / ____|                   (_)| |
               | |  __  _ __  __ _ __   __ _ | |_  ___   _ __
               | | |_ || '__|/ _` |\ \ / /| || __|/ _ \ | '_ \
               | |__| || |  | (_| | \ V / | || |_| (_) || | | |
                \_____||_|   \__,_|  \_/  |_| \__|\___/ |_| |_|

OS name : Linux
OS architecture : amd64
OS version : 3.16.0-4-amd64

Java version : 1.8.0_121
Java vendor : Oracle Corporation
Java home : /usr/lib/jvm/java-8-oracle/jre
Java Virtual Machine version : 25.121-b13

Available processors (cores) : 8
Free memory : 1002354 MB
Maximum memory : 15019802 MB
Total memory available to JVM : 1012924 MB

13:13:09 [main] o.g.c.i.modules.ConfigurationModule - Configuration file successfully loaded
13:13:11 [main] org.graviton.script.ScriptProcessor - Script processor successfully loaded
Exception in thread "main" com.google.inject.CreationException: Unable to create injector, see the following errors:

1) Error injecting constructor, com.zaxxer.hikari.pool.HikariPool$PoolInitializationException: Failed to initialize pool: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
  at org.graviton.database.GameDatabase.<init>(GameDatabase.java:15)
  while locating org.graviton.database.GameDatabase
  at org.graviton.core.injector.modules.DatabaseModule.configure(DatabaseModule.java:18) (via modules: org.graviton.core.injector.MainModule -> org.graviton.core.injector.modules.DatabaseModule)
  while locating org.graviton.database.AbstractDatabase annotated with @com.google.inject.name.Named(value=database.game)
Caused by: com.zaxxer.hikari.pool.HikariPool$PoolInitializationException: Failed to initialize pool: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
        at com.zaxxer.hikari.pool.HikariPool.throwPoolInitializationException(HikariPool.java:544)
        at com.zaxxer.hikari.pool.HikariPool.checkFailFast(HikariPool.java:536)
        at com.zaxxer.hikari.pool.HikariPool.<init>(HikariPool.java:112)
        at com.zaxxer.hikari.HikariDataSource.<init>(HikariDataSource.java:72)
        at org.graviton.database.AbstractDatabase.<init>(AbstractDatabase.java:28)
        at org.graviton.database.GameDatabase.<init>(GameDatabase.java:15)
        at org.graviton.database.GameDatabase$$FastClassByGuice$$f0e8b146.newInstance(<generated>)
        at com.google.inject.internal.DefaultConstructionProxyFactory$FastClassProxy.newInstance(DefaultConstructionProxyFactory.java:89)
        at com.google.inject.internal.ConstructorInjector.provision(ConstructorInjector.java:111)
        at com.google.inject.internal.ConstructorInjector.construct(ConstructorInjector.java:90)
        at com.google.inject.internal.ConstructorBindingImpl$Factory.get(ConstructorBindingImpl.java:268)
        at com.google.inject.internal.FactoryProxy.get(FactoryProxy.java:56)
        at com.google.inject.internal.ProviderToInternalFactoryAdapter$1.call(ProviderToInternalFactoryAdapter.java:46)
        at com.google.inject.internal.InjectorImpl.callInContext(InjectorImpl.java:1092)
        at com.google.inject.internal.ProviderToInternalFactoryAdapter.get(ProviderToInternalFactoryAdapter.java:40)
        at com.google.inject.internal.SingletonScope$1.get(SingletonScope.java:194)
        at com.google.inject.internal.InternalFactoryToProviderAdapter.get(InternalFactoryToProviderAdapter.java:41)
        at com.google.inject.internal.InternalInjectorCreator$1.call(InternalInjectorCreator.java:205)
        at com.google.inject.internal.InternalInjectorCreator$1.call(InternalInjectorCreator.java:199)
        at com.google.inject.internal.InjectorImpl.callInContext(InjectorImpl.java:1085)
        at com.google.inject.internal.InternalInjectorCreator.loadEagerSingletons(InternalInjectorCreator.java:199)
        at com.google.inject.internal.InternalInjectorCreator.injectDynamically(InternalInjectorCreator.java:180)
        at com.google.inject.internal.InternalInjectorCreator.build(InternalInjectorCreator.java:110)
        at com.google.inject.Guice.createInjector(Guice.java:99)
        at com.google.inject.Guice.createInjector(Guice.java:73)
        at com.google.inject.Guice.createInjector(Guice.java:62)
        at org.graviton.core.Application.create(Application.java:15)
        at org.graviton.core.Main.main(Main.java:12)
Caused by: com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
        at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:590)
        at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:57)
        at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:1606)
        at com.mysql.cj.jdbc.ConnectionImpl.<init>(ConnectionImpl.java:633)
        at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:347)
        at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:219)
        at com.mysql.cj.jdbc.MysqlDataSource.getConnection(MysqlDataSource.java:423)
        at com.mysql.cj.jdbc.MysqlDataSource.getConnection(MysqlDataSource.java:139)
        at com.mysql.cj.jdbc.MysqlDataSource.getConnection(MysqlDataSource.java:110)
        at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:356)
        at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:199)
        at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:444)
        at com.zaxxer.hikari.pool.HikariPool.checkFailFast(HikariPool.java:515)
        ... 26 more
Caused by: com.mysql.cj.core.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
        at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
        at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
        at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
        at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
        at com.mysql.cj.core.exceptions.ExceptionFactory.createException(ExceptionFactory.java:54)
        at com.mysql.cj.core.exceptions.ExceptionFactory.createException(ExceptionFactory.java:93)
        at com.mysql.cj.core.exceptions.ExceptionFactory.createException(ExceptionFactory.java:133)
        at com.mysql.cj.core.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:149)
        at com.mysql.cj.mysqla.io.MysqlaSocketConnection.connect(MysqlaSocketConnection.java:83)
        at com.mysql.cj.mysqla.MysqlaSession.connect(MysqlaSession.java:122)
        at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:1726)
        at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:1596)
        ... 36 more
Caused by: java.net.ConnectException: Connection refused (Connection refused)
        at java.net.PlainSocketImpl.socketConnect(Native Method)
        at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350)
        at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206)
        at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188)
        at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392)
        at java.net.Socket.connect(Socket.java:589)
        at com.mysql.cj.core.io.StandardSocketFactory.connect(StandardSocketFactory.java:202)
        at com.mysql.cj.mysqla.io.MysqlaSocketConnection.connect(MysqlaSocketConnection.java:57)
        ... 39 more

2) Error injecting constructor, com.zaxxer.hikari.pool.HikariPool$PoolInitializationException: Failed to initialize pool: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
  at org.graviton.database.GameDatabase.<init>(GameDatabase.java:15)
  while locating org.graviton.database.GameDatabase
  at org.graviton.core.injector.modules.DatabaseModule.configure(DatabaseModule.java:18) (via modules: org.graviton.core.injector.MainModule -> org.graviton.core.injector.modules.DatabaseModule)
  while locating org.graviton.database.AbstractDatabase annotated with @com.google.inject.name.Named(value=database.game)
    for the 2nd parameter of org.graviton.database.entity.EntityFactory.<init>(EntityFactory.java:88)
  at org.graviton.core.injector.modules.DatabaseModule.configure(DatabaseModule.java:28) (via modules: org.graviton.core.injector.MainModule -> org.graviton.core.injector.modules.DatabaseModule)
  while locating org.graviton.database.entity.EntityFactory
    for field at org.graviton.database.repository.GameMapRepository.entityFactory(GameMapRepository.java:30)
  at org.graviton.core.injector.modules.DatabaseModule.configure(DatabaseModule.java:23) (via modules: org.graviton.core.injector.MainModule -> org.graviton.core.injector.modules.DatabaseModule)
  while locating org.graviton.database.repository.GameMapRepository
Caused by: com.zaxxer.hikari.pool.HikariPool$PoolInitializationException: Failed to initialize pool: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
        at com.zaxxer.hikari.pool.HikariPool.throwPoolInitializationException(HikariPool.java:544)
        at com.zaxxer.hikari.pool.HikariPool.checkFailFast(HikariPool.java:536)
        at com.zaxxer.hikari.pool.HikariPool.<init>(HikariPool.java:112)
        at com.zaxxer.hikari.HikariDataSource.<init>(HikariDataSource.java:72)
        at org.graviton.database.AbstractDatabase.<init>(AbstractDatabase.java:28)
        at org.graviton.database.GameDatabase.<init>(GameDatabase.java:15)
        at org.graviton.database.GameDatabase$$FastClassByGuice$$f0e8b146.newInstance(<generated>)
        at com.google.inject.internal.DefaultConstructionProxyFactory$FastClassProxy.newInstance(DefaultConstructionProxyFactory.java:89)
        at com.google.inject.internal.ConstructorInjector.provision(ConstructorInjector.java:111)
        at com.google.inject.internal.ConstructorInjector.construct(ConstructorInjector.java:90)
        at com.google.inject.internal.ConstructorBindingImpl$Factory.get(ConstructorBindingImpl.java:268)
        at com.google.inject.internal.FactoryProxy.get(FactoryProxy.java:56)
        at com.google.inject.internal.ProviderToInternalFactoryAdapter$1.call(ProviderToInternalFactoryAdapter.java:46)
        at com.google.inject.internal.InjectorImpl.callInContext(InjectorImpl.java:1092)
        at com.google.inject.internal.ProviderToInternalFactoryAdapter.get(ProviderToInternalFactoryAdapter.java:40)
        at com.google.inject.internal.SingletonScope$1.get(SingletonScope.java:194)
        at com.google.inject.internal.InternalFactoryToProviderAdapter.get(InternalFactoryToProviderAdapter.java:41)
        at com.google.inject.internal.SingleParameterInjector.inject(SingleParameterInjector.java:38)
        at com.google.inject.internal.SingleParameterInjector.getAll(SingleParameterInjector.java:62)
        at com.google.inject.internal.ConstructorInjector.provision(ConstructorInjector.java:110)
        at com.google.inject.internal.ConstructorInjector.construct(ConstructorInjector.java:90)
        at com.google.inject.internal.ConstructorBindingImpl$Factory.get(ConstructorBindingImpl.java:268)
        at com.google.inject.internal.ProviderToInternalFactoryAdapter$1.call(ProviderToInternalFactoryAdapter.java:46)
        at com.google.inject.internal.InjectorImpl.callInContext(InjectorImpl.java:1092)
        at com.google.inject.internal.ProviderToInternalFactoryAdapter.get(ProviderToInternalFactoryAdapter.java:40)
        at com.google.inject.internal.SingletonScope$1.get(SingletonScope.java:194)
        at com.google.inject.internal.InternalFactoryToProviderAdapter.get(InternalFactoryToProviderAdapter.java:41)
        at com.google.inject.internal.SingleFieldInjector.inject(SingleFieldInjector.java:54)
        at com.google.inject.internal.MembersInjectorImpl.injectMembers(MembersInjectorImpl.java:132)
        at com.google.inject.internal.ConstructorInjector.provision(ConstructorInjector.java:120)
        at com.google.inject.internal.ConstructorInjector.construct(ConstructorInjector.java:90)
        at com.google.inject.internal.ConstructorBindingImpl$Factory.get(ConstructorBindingImpl.java:268)
        at com.google.inject.internal.ProviderToInternalFactoryAdapter$1.call(ProviderToInternalFactoryAdapter.java:46)
        at com.google.inject.internal.InjectorImpl.callInContext(InjectorImpl.java:1092)
        at com.google.inject.internal.ProviderToInternalFactoryAdapter.get(ProviderToInternalFactoryAdapter.java:40)
        at com.google.inject.internal.SingletonScope$1.get(SingletonScope.java:194)
        at com.google.inject.internal.InternalFactoryToProviderAdapter.get(InternalFactoryToProviderAdapter.java:41)
        at com.google.inject.internal.InternalInjectorCreator$1.call(InternalInjectorCreator.java:205)
        at com.google.inject.internal.InternalInjectorCreator$1.call(InternalInjectorCreator.java:199)
        at com.google.inject.internal.InjectorImpl.callInContext(InjectorImpl.java:1085)
        at com.google.inject.internal.InternalInjectorCreator.loadEagerSingletons(InternalInjectorCreator.java:199)
        at com.google.inject.internal.InternalInjectorCreator.injectDynamically(InternalInjectorCreator.java:180)
        at com.google.inject.internal.InternalInjectorCreator.build(InternalInjectorCreator.java:110)
        at com.google.inject.Guice.createInjector(Guice.java:99)
        at com.google.inject.Guice.createInjector(Guice.java:73)
        at com.google.inject.Guice.createInjector(Guice.java:62)
        at org.graviton.core.Application.create(Application.java:15)
        at org.graviton.core.Main.main(Main.java:12)
Caused by: com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
        at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:590)
        at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:57)
        at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:1606)
        at com.mysql.cj.jdbc.ConnectionImpl.<init>(ConnectionImpl.java:633)
        at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:347)
        at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:219)
        at com.mysql.cj.jdbc.MysqlDataSource.getConnection(MysqlDataSource.java:423)
        at com.mysql.cj.jdbc.MysqlDataSource.getConnection(MysqlDataSource.java:139)
        at com.mysql.cj.jdbc.MysqlDataSource.getConnection(MysqlDataSource.java:110)
        at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:356)
        at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:199)
        at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:444)
        at com.zaxxer.hikari.pool.HikariPool.checkFailFast(HikariPool.java:515)
        ... 46 more
Caused by: com.mysql.cj.core.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
        at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
        at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
        at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
        at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
        at com.mysql.cj.core.exceptions.ExceptionFactory.createException(ExceptionFactory.java:54)
        at com.mysql.cj.core.exceptions.ExceptionFactory.createException(ExceptionFactory.java:93)
        at com.mysql.cj.core.exceptions.ExceptionFactory.createException(ExceptionFactory.java:133)
        at com.mysql.cj.core.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:149)
        at com.mysql.cj.mysqla.io.MysqlaSocketConnection.connect(MysqlaSocketConnection.java:83)
        at com.mysql.cj.mysqla.MysqlaSession.connect(MysqlaSession.java:122)
        at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:1726)
        at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:1596)
        ... 56 more
Caused by: java.net.ConnectException: Connection refused (Connection refused)
        at java.net.PlainSocketImpl.socketConnect(Native Method)
        at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350)
        at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206)
        at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188)
        at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392)
        at java.net.Socket.connect(Socket.java:589)
        at com.mysql.cj.core.io.StandardSocketFactory.connect(StandardSocketFactory.java:202)
        at com.mysql.cj.mysqla.io.MysqlaSocketConnection.connect(MysqlaSocketConnection.java:57)
        ... 59 more

3) Error injecting constructor, com.zaxxer.hikari.pool.HikariPool$PoolInitializationException: Failed to initialize pool: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
  at org.graviton.database.GameDatabase.<init>(GameDatabase.java:15)
  while locating org.graviton.database.GameDatabase
  at org.graviton.core.injector.modules.DatabaseModule.configure(DatabaseModule.java:18) (via modules: org.graviton.core.injector.MainModule -> org.graviton.core.injector.modules.DatabaseModule)
  while locating org.graviton.database.AbstractDatabase annotated with @com.google.inject.name.Named(value=database.game)
    for the 1st parameter of org.graviton.database.repository.GuildRepository.<init>(GuildRepository.java:30)
  at org.graviton.core.injector.modules.DatabaseModule.configure(DatabaseModule.java:26) (via modules: org.graviton.core.injector.MainModule -> org.graviton.core.injector.modules.DatabaseModule)
  while locating org.graviton.database.repository.GuildRepository
Caused by: com.zaxxer.hikari.pool.HikariPool$PoolInitializationException: Failed to initialize pool: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
        at com.zaxxer.hikari.pool.HikariPool.throwPoolInitializationException(HikariPool.java:544)
        at com.zaxxer.hikari.pool.HikariPool.checkFailFast(HikariPool.java:536)
        at com.zaxxer.hikari.pool.HikariPool.<init>(HikariPool.java:112)
        at com.zaxxer.hikari.HikariDataSource.<init>(HikariDataSource.java:72)
        at org.graviton.database.AbstractDatabase.<init>(AbstractDatabase.java:28)
        at org.graviton.database.GameDatabase.<init>(GameDatabase.java:15)
        at org.graviton.database.GameDatabase$$FastClassByGuice$$f0e8b146.newInstance(<generated>)
        at com.google.inject.internal.DefaultConstructionProxyFactory$FastClassProxy.newInstance(DefaultConstructionProxyFactory.java:89)
        at com.google.inject.internal.ConstructorInjector.provision(ConstructorInjector.java:111)
        at com.google.inject.internal.ConstructorInjector.construct(ConstructorInjector.java:90)
        at com.google.inject.internal.ConstructorBindingImpl$Factory.get(ConstructorBindingImpl.java:268)
        at com.google.inject.internal.FactoryProxy.get(FactoryProxy.java:56)
        at com.google.inject.internal.ProviderToInternalFactoryAdapter$1.call(ProviderToInternalFactoryAdapter.java:46)
        at com.google.inject.internal.InjectorImpl.callInContext(InjectorImpl.java:1092)
        at com.google.inject.internal.ProviderToInternalFactoryAdapter.get(ProviderToInternalFactoryAdapter.java:40)
        at com.google.inject.internal.SingletonScope$1.get(SingletonScope.java:194)
        at com.google.inject.internal.InternalFactoryToProviderAdapter.get(InternalFactoryToProviderAdapter.java:41)
        at com.google.inject.internal.SingleParameterInjector.inject(SingleParameterInjector.java:38)
        at com.google.inject.internal.SingleParameterInjector.getAll(SingleParameterInjector.java:62)
        at com.google.inject.internal.ConstructorInjector.provision(ConstructorInjector.java:110)
        at com.google.inject.internal.ConstructorInjector.construct(ConstructorInjector.java:90)
        at com.google.inject.internal.ConstructorBindingImpl$Factory.get(ConstructorBindingImpl.java:268)
        at com.google.inject.internal.ProviderToInternalFactoryAdapter$1.call(ProviderToInternalFactoryAdapter.java:46)
        at com.google.inject.internal.InjectorImpl.callInContext(InjectorImpl.java:1092)
        at com.google.inject.internal.ProviderToInternalFactoryAdapter.get(ProviderToInternalFactoryAdapter.java:40)
        at com.google.inject.internal.SingletonScope$1.get(SingletonScope.java:194)
        at com.google.inject.internal.InternalFactoryToProviderAdapter.get(InternalFactoryToProviderAdapter.java:41)
        at com.google.inject.internal.InternalInjectorCreator$1.call(InternalInjectorCreator.java:205)
        at com.google.inject.internal.InternalInjectorCreator$1.call(InternalInjectorCreator.java:199)
        at com.google.inject.internal.InjectorImpl.callInContext(InjectorImpl.java:1085)
        at com.google.inject.internal.InternalInjectorCreator.loadEagerSingletons(InternalInjectorCreator.java:199)
        at com.google.inject.internal.InternalInjectorCreator.injectDynamically(InternalInjectorCreator.java:180)
        at com.google.inject.internal.InternalInjectorCreator.build(InternalInjectorCreator.java:110)
        at com.google.inject.Guice.createInjector(Guice.java:99)
        at com.google.inject.Guice.createInjector(Guice.java:73)
        at com.google.inject.Guice.createInjector(Guice.java:62)
        at org.graviton.core.Application.create(Application.java:15)
        at org.graviton.core.Main.main(Main.java:12)
Caused by: com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
        at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:590)
        at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:57)
        at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:1606)
        at com.mysql.cj.jdbc.ConnectionImpl.<init>(ConnectionImpl.java:633)
        at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:347)
        at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:219)
        at com.mysql.cj.jdbc.MysqlDataSource.getConnection(MysqlDataSource.java:423)
        at com.mysql.cj.jdbc.MysqlDataSource.getConnection(MysqlDataSource.java:139)
        at com.mysql.cj.jdbc.MysqlDataSource.getConnection(MysqlDataSource.java:110)
        at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:356)
        at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:199)
        at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:444)
        at com.zaxxer.hikari.pool.HikariPool.checkFailFast(HikariPool.java:515)
        ... 36 more
Caused by: com.mysql.cj.core.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
        at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
        at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
        at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
        at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
        at com.mysql.cj.core.exceptions.ExceptionFactory.createException(ExceptionFactory.java:54)
        at com.mysql.cj.core.exceptions.ExceptionFactory.createException(ExceptionFactory.java:93)
        at com.mysql.cj.core.exceptions.ExceptionFactory.createException(ExceptionFactory.java:133)
        at com.mysql.cj.core.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:149)
        at com.mysql.cj.mysqla.io.MysqlaSocketConnection.connect(MysqlaSocketConnection.java:83)
        at com.mysql.cj.mysqla.MysqlaSession.connect(MysqlaSession.java:122)
        at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:1726)
        at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:1596)
        ... 46 more
Caused by: java.net.ConnectException: Connection refused (Connection refused)
        at java.net.PlainSocketImpl.socketConnect(Native Method)
        at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350)
        at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206)
        at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188)
        at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392)
        at java.net.Socket.connect(Socket.java:589)
        at com.mysql.cj.core.io.StandardSocketFactory.connect(StandardSocketFactory.java:202)
        at com.mysql.cj.mysqla.io.MysqlaSocketConnection.connect(MysqlaSocketConnection.java:57)
        ... 49 more

4) Error injecting constructor, com.zaxxer.hikari.pool.HikariPool$PoolInitializationException: Failed to initialize pool: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
  at org.graviton.database.GameDatabase.<init>(GameDatabase.java:15)
  while locating org.graviton.database.GameDatabase
  at org.graviton.core.injector.modules.DatabaseModule.configure(DatabaseModule.java:18) (via modules: org.graviton.core.injector.MainModule -> org.graviton.core.injector.modules.DatabaseModule)
  while locating org.graviton.database.AbstractDatabase annotated with @com.google.inject.name.Named(value=database.game)
    for the 2nd parameter of org.graviton.database.entity.EntityFactory.<init>(EntityFactory.java:88)
  at org.graviton.core.injector.modules.DatabaseModule.configure(DatabaseModule.java:28) (via modules: org.graviton.core.injector.MainModule -> org.graviton.core.injector.modules.DatabaseModule)
  while locating org.graviton.database.entity.EntityFactory
Caused by: com.zaxxer.hikari.pool.HikariPool$PoolInitializationException (same stack trace as error #3)
5) Error injecting constructor, com.zaxxer.hikari.pool.HikariPool$PoolInitializationException: Failed to initialize pool: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
  at org.graviton.database.LoginDatabase.<init>(LoginDatabase.java:15)
  while locating org.graviton.database.LoginDatabase
  at org.graviton.core.injector.modules.DatabaseModule.configure(DatabaseModule.java:19) (via modules: org.graviton.core.injector.MainModule -> org.graviton.core.injector.modules.DatabaseModule)
  while locating org.graviton.database.AbstractDatabase annotated with @com.google.inject.name.Named(value=database.login)
Caused by: com.zaxxer.hikari.pool.HikariPool$PoolInitializationException: Failed to initialize pool: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
        at com.zaxxer.hikari.pool.HikariPool.throwPoolInitializationException(HikariPool.java:544)
        at com.zaxxer.hikari.pool.HikariPool.checkFailFast(HikariPool.java:536)
        at com.zaxxer.hikari.pool.HikariPool.<init>(HikariPool.java:112)
        at com.zaxxer.hikari.HikariDataSource.<init>(HikariDataSource.java:72)
        at org.graviton.database.AbstractDatabase.<init>(AbstractDatabase.java:28)
        at org.graviton.database.LoginDatabase.<init>(LoginDatabase.java:15)
        at org.graviton.database.LoginDatabase$$FastClassByGuice$$563d216b.newInstance(<generated>)
        at com.google.inject.internal.DefaultConstructionProxyFactory$FastClassProxy.newInstance(DefaultConstructionProxyFactory.java:89)
        at com.google.inject.internal.ConstructorInjector.provision(ConstructorInjector.java:111)
        at com.google.inject.internal.ConstructorInjector.construct(ConstructorInjector.java:90)
        at com.google.inject.internal.ConstructorBindingImpl$Factory.get(ConstructorBindingImpl.java:268)
        at com.google.inject.internal.FactoryProxy.get(FactoryProxy.java:56)
        at com.google.inject.internal.ProviderToInternalFactoryAdapter$1.call(ProviderToInternalFactoryAdapter.java:46)
        at com.google.inject.internal.InjectorImpl.callInContext(InjectorImpl.java:1092)
        at com.google.inject.internal.ProviderToInternalFactoryAdapter.get(ProviderToInternalFactoryAdapter.java:40)
        at com.google.inject.internal.SingletonScope$1.get(SingletonScope.java:194)
        at com.google.inject.internal.InternalFactoryToProviderAdapter.get(InternalFactoryToProviderAdapter.java:41)
        at com.google.inject.internal.InternalInjectorCreator$1.call(InternalInjectorCreator.java:205)
        at com.google.inject.internal.InternalInjectorCreator$1.call(InternalInjectorCreator.java:199)
        at com.google.inject.internal.InjectorImpl.callInContext(InjectorImpl.java:1085)
        at com.google.inject.internal.InternalInjectorCreator.loadEagerSingletons(InternalInjectorCreator.java:199)
        at com.google.inject.internal.InternalInjectorCreator.injectDynamically(InternalInjectorCreator.java:180)
        at com.google.inject.internal.InternalInjectorCreator.build(InternalInjectorCreator.java:110)
        at com.google.inject.Guice.createInjector(Guice.java:99)
        at com.google.inject.Guice.createInjector(Guice.java:73)
        at com.google.inject.Guice.createInjector(Guice.java:62)
        at org.graviton.core.Application.create(Application.java:15)
        at org.graviton.core.Main.main(Main.java:12)
Caused by: com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
        at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:590)
        at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:57)
        at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:1606)
        at com.mysql.cj.jdbc.ConnectionImpl.<init>(ConnectionImpl.java:633)
        at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:347)
        at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:219)
        at com.mysql.cj.jdbc.MysqlDataSource.getConnection(MysqlDataSource.java:423)
        at com.mysql.cj.jdbc.MysqlDataSource.getConnection(MysqlDataSource.java:139)
        at com.mysql.cj.jdbc.MysqlDataSource.getConnection(MysqlDataSource.java:110)
        at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:356)
        at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:199)
        at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:444)
        at com.zaxxer.hikari.pool.HikariPool.checkFailFast(HikariPool.java:515)
        ... 26 more
Caused by: com.mysql.cj.core.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
        at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
        at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
        at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
        at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
        at com.mysql.cj.core.exceptions.ExceptionFactory.createException(ExceptionFactory.java:54)
        at com.mysql.cj.core.exceptions.ExceptionFactory.createException(ExceptionFactory.java:93)
        at com.mysql.cj.core.exceptions.ExceptionFactory.createException(ExceptionFactory.java:133)
        at com.mysql.cj.core.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:149)
        at com.mysql.cj.mysqla.io.MysqlaSocketConnection.connect(MysqlaSocketConnection.java:83)
        at com.mysql.cj.mysqla.MysqlaSession.connect(MysqlaSession.java:122)
        at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:1726)
        at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:1596)
        ... 36 more
Caused by: java.net.ConnectException: Connection refused (Connection refused)
        at java.net.PlainSocketImpl.socketConnect(Native Method)
        at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350)
        at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206)
        at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188)
        at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392)
        at java.net.Socket.connect(Socket.java:589)
        at com.mysql.cj.core.io.StandardSocketFactory.connect(StandardSocketFactory.java:202)
        at com.mysql.cj.mysqla.io.MysqlaSocketConnection.connect(MysqlaSocketConnection.java:57)
        ... 39 more

6) Error injecting constructor, com.zaxxer.hikari.pool.HikariPool$PoolInitializationException: Failed to initialize pool: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
  at org.graviton.database.LoginDatabase.<init>(LoginDatabase.java:15)
  while locating org.graviton.database.LoginDatabase
  at org.graviton.core.injector.modules.DatabaseModule.configure(DatabaseModule.java:19) (via modules: org.graviton.core.injector.MainModule -> org.graviton.core.injector.modules.DatabaseModule)
  while locating org.graviton.database.AbstractDatabase annotated with @com.google.inject.name.Named(value=database.login)
    for the 1st parameter of org.graviton.database.repository.PlayerRepository.<init>(PlayerRepository.java:36)
  at org.graviton.core.injector.modules.DatabaseModule.configure(DatabaseModule.java:21) (via modules: org.graviton.core.injector.MainModule -> org.graviton.core.injector.modules.DatabaseModule)
  while locating org.graviton.database.repository.PlayerRepository
Caused by: com.zaxxer.hikari.pool.HikariPool$PoolInitializationException: Failed to initialize pool: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
        at com.zaxxer.hikari.pool.HikariPool.throwPoolInitializationException(HikariPool.java:544)
        at com.zaxxer.hikari.pool.HikariPool.checkFailFast(HikariPool.java:536)
        at com.zaxxer.hikari.pool.HikariPool.<init>(HikariPool.java:112)
        at com.zaxxer.hikari.HikariDataSource.<init>(HikariDataSource.java:72)
        at org.graviton.database.AbstractDatabase.<init>(AbstractDatabase.java:28)
        at org.graviton.database.LoginDatabase.<init>(LoginDatabase.java:15)
        at org.graviton.database.LoginDatabase$$FastClassByGuice$$563d216b.newInstance(<generated>)
        at com.google.inject.internal.DefaultConstructionProxyFactory$FastClassProxy.newInstance(DefaultConstructionProxyFactory.java:89)
        at com.google.inject.internal.ConstructorInjector.provision(ConstructorInjector.java:111)
        at com.google.inject.internal.ConstructorInjector.construct(ConstructorInjector.java:90)
        at com.google.inject.internal.ConstructorBindingImpl$Factory.get(ConstructorBindingImpl.java:268)
        at com.google.inject.internal.FactoryProxy.get(FactoryProxy.java:56)
        at com.google.inject.internal.ProviderToInternalFactoryAdapter$1.call(ProviderToInternalFactoryAdapter.java:46)
        at com.google.inject.internal.InjectorImpl.callInContext(InjectorImpl.java:1092)
        at com.google.inject.internal.ProviderToInternalFactoryAdapter.get(ProviderToInternalFactoryAdapter.java:40)
        at com.google.inject.internal.SingletonScope$1.get(SingletonScope.java:194)
        at com.google.inject.internal.InternalFactoryToProviderAdapter.get(InternalFactoryToProviderAdapter.java:41)
        at com.google.inject.internal.SingleParameterInjector.inject(SingleParameterInjector.java:38)
        at com.google.inject.internal.SingleParameterInjector.getAll(SingleParameterInjector.java:62)
        at com.google.inject.internal.ConstructorInjector.provision(ConstructorInjector.java:110)
        at com.google.inject.internal.ConstructorInjector.construct(ConstructorInjector.java:90)
        at com.google.inject.internal.ConstructorBindingImpl$Factory.get(ConstructorBindingImpl.java:268)
        at com.google.inject.internal.ProviderToInternalFactoryAdapter$1.call(ProviderToInternalFactoryAdapter.java:46)
        at com.google.inject.internal.InjectorImpl.callInContext(InjectorImpl.java:1092)
        at com.google.inject.internal.ProviderToInternalFactoryAdapter.get(ProviderToInternalFactoryAdapter.java:40)
        at com.google.inject.internal.SingletonScope$1.get(SingletonScope.java:194)
        at com.google.inject.internal.InternalFactoryToProviderAdapter.get(InternalFactoryToProviderAdapter.java:41)
        at com.google.inject.internal.InternalInjectorCreator$1.call(InternalInjectorCreator.java:205)
        at com.google.inject.internal.InternalInjectorCreator$1.call(InternalInjectorCreator.java:199)
        at com.google.inject.internal.InjectorImpl.callInContext(InjectorImpl.java:1085)
        at com.google.inject.internal.InternalInjectorCreator.loadEagerSingletons(InternalInjectorCreator.java:199)
        at com.google.inject.internal.InternalInjectorCreator.injectDynamically(InternalInjectorCreator.java:180)
        at com.google.inject.internal.InternalInjectorCreator.build(InternalInjectorCreator.java:110)
        at com.google.inject.Guice.createInjector(Guice.java:99)
        at com.google.inject.Guice.createInjector(Guice.java:73)
        at com.google.inject.Guice.createInjector(Guice.java:62)
        at org.graviton.core.Application.create(Application.java:15)
        at org.graviton.core.Main.main(Main.java:12)
Caused by: com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
        at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:590)
        at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:57)
        at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:1606)
        at com.mysql.cj.jdbc.ConnectionImpl.<init>(ConnectionImpl.java:633)
        at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:347)
        at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:219)
        at com.mysql.cj.jdbc.MysqlDataSource.getConnection(MysqlDataSource.java:423)
        at com.mysql.cj.jdbc.MysqlDataSource.getConnection(MysqlDataSource.java:139)
        at com.mysql.cj.jdbc.MysqlDataSource.getConnection(MysqlDataSource.java:110)
        at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:356)
        at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:199)
        at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:444)
        at com.zaxxer.hikari.pool.HikariPool.checkFailFast(HikariPool.java:515)
        ... 36 more
Caused by: com.mysql.cj.core.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
        at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
        at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
        at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
        at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
        at com.mysql.cj.core.exceptions.ExceptionFactory.createException(ExceptionFactory.java:54)
        at com.mysql.cj.core.exceptions.ExceptionFactory.createException(ExceptionFactory.java:93)
        at com.mysql.cj.core.exceptions.ExceptionFactory.createException(ExceptionFactory.java:133)
        at com.mysql.cj.core.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:149)
        at com.mysql.cj.mysqla.io.MysqlaSocketConnection.connect(MysqlaSocketConnection.java:83)
        at com.mysql.cj.mysqla.MysqlaSession.connect(MysqlaSession.java:122)
        at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:1726)
        at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:1596)
        ... 46 more
Caused by: java.net.ConnectException: Connection refused (Connection refused)
        at java.net.PlainSocketImpl.socketConnect(Native Method)
        at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350)
        at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206)
        at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188)
        at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392)
        at java.net.Socket.connect(Socket.java:589)
        at com.mysql.cj.core.io.StandardSocketFactory.connect(StandardSocketFactory.java:202)
        at com.mysql.cj.mysqla.io.MysqlaSocketConnection.connect(MysqlaSocketConnection.java:57)
        ... 49 more

7) Error injecting constructor, com.zaxxer.hikari.pool.HikariPool$PoolInitializationException: Failed to initialize pool: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
  at org.graviton.database.LoginDatabase.<init>(LoginDatabase.java:15)
  while locating org.graviton.database.LoginDatabase
  at org.graviton.core.injector.modules.DatabaseModule.configure(DatabaseModule.java:19) (via modules: org.graviton.core.injector.MainModule -> org.graviton.core.injector.modules.DatabaseModule)
  while locating org.graviton.database.AbstractDatabase annotated with @com.google.inject.name.Named(value=database.login)
    for the 1st parameter of org.graviton.database.repository.AccountRepository.<init>(AccountRepository.java:25)
  at org.graviton.core.injector.modules.DatabaseModule.configure(DatabaseModule.java:22) (via modules: org.graviton.core.injector.MainModule -> org.graviton.core.injector.modules.DatabaseModule)
  while locating org.graviton.database.repository.AccountRepository
Caused by: com.zaxxer.hikari.pool.HikariPool$PoolInitializationException (same stack trace as error #6)
8) Error injecting constructor, com.zaxxer.hikari.pool.HikariPool$PoolInitializationException: Failed to initialize pool: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
  at org.graviton.database.LoginDatabase.<init>(LoginDatabase.java:15)
  while locating org.graviton.database.LoginDatabase
  at org.graviton.core.injector.modules.DatabaseModule.configure(DatabaseModule.java:19) (via modules: org.graviton.core.injector.MainModule -> org.graviton.core.injector.modules.DatabaseModule)
  while locating org.graviton.database.AbstractDatabase annotated with @com.google.inject.name.Named(value=database.login)
    for the 1st parameter of org.graviton.database.repository.AccountRepository.<init>(AccountRepository.java:25)
  at org.graviton.core.injector.modules.DatabaseModule.configure(DatabaseModule.java:22) (via modules: org.graviton.core.injector.MainModule -> org.graviton.core.injector.modules.DatabaseModule)
  while locating org.graviton.database.repository.AccountRepository
    for field at org.graviton.network.exchange.ExchangeConnector.accountRepository(ExchangeConnector.java:23)
  at org.graviton.core.injector.modules.NetworkModule.configure(NetworkModule.java:13) (via modules: org.graviton.core.injector.MainModule -> org.graviton.core.injector.modules.NetworkModule)
  while locating org.graviton.network.exchange.ExchangeConnector
Caused by: com.zaxxer.hikari.pool.HikariPool$PoolInitializationException: Failed to initialize pool: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
        at com.zaxxer.hikari.pool.HikariPool.throwPoolInitializationException(HikariPool.java:544)
        at com.zaxxer.hikari.pool.HikariPool.checkFailFast(HikariPool.java:536)
        at com.zaxxer.hikari.pool.HikariPool.<init>(HikariPool.java:112)
        at com.zaxxer.hikari.HikariDataSource.<init>(HikariDataSource.java:72)
        at org.graviton.database.AbstractDatabase.<init>(AbstractDatabase.java:28)
        at org.graviton.database.LoginDatabase.<init>(LoginDatabase.java:15)
        at org.graviton.database.LoginDatabase$$FastClassByGuice$$563d216b.newInstance(<generated>)
        at com.google.inject.internal.DefaultConstructionProxyFactory$FastClassProxy.newInstance(DefaultConstructionProxyFactory.java:89)
        at com.google.inject.internal.ConstructorInjector.provision(ConstructorInjector.java:111)
        at com.google.inject.internal.ConstructorInjector.construct(ConstructorInjector.java:90)
        at com.google.inject.internal.ConstructorBindingImpl$Factory.get(ConstructorBindingImpl.java:268)
        at com.google.inject.internal.FactoryProxy.get(FactoryProxy.java:56)
        at com.google.inject.internal.ProviderToInternalFactoryAdapter$1.call(ProviderToInternalFactoryAdapter.java:46)
        at com.google.inject.internal.InjectorImpl.callInContext(InjectorImpl.java:1092)
        at com.google.inject.internal.ProviderToInternalFactoryAdapter.get(ProviderToInternalFactoryAdapter.java:40)
        at com.google.inject.internal.SingletonScope$1.get(SingletonScope.java:194)
        at com.google.inject.internal.InternalFactoryToProviderAdapter.get(InternalFactoryToProviderAdapter.java:41)
        at com.google.inject.internal.SingleParameterInjector.inject(SingleParameterInjector.java:38)
        at com.google.inject.internal.SingleParameterInjector.getAll(SingleParameterInjector.java:62)
        at com.google.inject.internal.ConstructorInjector.provision(ConstructorInjector.java:110)
        at com.google.inject.internal.ConstructorInjector.construct(ConstructorInjector.java:90)
        at com.google.inject.internal.ConstructorBindingImpl$Factory.get(ConstructorBindingImpl.java:268)
        at com.google.inject.internal.ProviderToInternalFactoryAdapter$1.call(ProviderToInternalFactoryAdapter.java:46)
        at com.google.inject.internal.InjectorImpl.callInContext(InjectorImpl.java:1092)
        at com.google.inject.internal.ProviderToInternalFactoryAdapter.get(ProviderToInternalFactoryAdapter.java:40)
        at com.google.inject.internal.SingletonScope$1.get(SingletonScope.java:194)
        at com.google.inject.internal.InternalFactoryToProviderAdapter.get(InternalFactoryToProviderAdapter.java:41)
        at com.google.inject.internal.SingleFieldInjector.inject(SingleFieldInjector.java:54)
        at com.google.inject.internal.MembersInjectorImpl.injectMembers(MembersInjectorImpl.java:132)
        at com.google.inject.internal.ConstructorInjector.provision(ConstructorInjector.java:120)
        at com.google.inject.internal.ConstructorInjector.construct(ConstructorInjector.java:90)
        at com.google.inject.internal.ConstructorBindingImpl$Factory.get(ConstructorBindingImpl.java:268)
        at com.google.inject.internal.ProviderToInternalFactoryAdapter$1.call(ProviderToInternalFactoryAdapter.java:46)
        at com.google.inject.internal.InjectorImpl.callInContext(InjectorImpl.java:1092)
        at com.google.inject.internal.ProviderToInternalFactoryAdapter.get(ProviderToInternalFactoryAdapter.java:40)
        at com.google.inject.internal.SingletonScope$1.get(SingletonScope.java:194)
        at com.google.inject.internal.InternalFactoryToProviderAdapter.get(InternalFactoryToProviderAdapter.java:41)
        at com.google.inject.internal.InternalInjectorCreator$1.call(InternalInjectorCreator.java:205)
        at com.google.inject.internal.InternalInjectorCreator$1.call(InternalInjectorCreator.java:199)
        at com.google.inject.internal.InjectorImpl.callInContext(InjectorImpl.java:1085)
        at com.google.inject.internal.InternalInjectorCreator.loadEagerSingletons(InternalInjectorCreator.java:199)
        at com.google.inject.internal.InternalInjectorCreator.injectDynamically(InternalInjectorCreator.java:180)
        at com.google.inject.internal.InternalInjectorCreator.build(InternalInjectorCreator.java:110)
        at com.google.inject.Guice.createInjector(Guice.java:99)
        at com.google.inject.Guice.createInjector(Guice.java:73)
        at com.google.inject.Guice.createInjector(Guice.java:62)
        at org.graviton.core.Application.create(Application.java:15)
        at org.graviton.core.Main.main(Main.java:12)
Caused by: com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
        at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:590)
        at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:57)
        at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:1606)
        at com.mysql.cj.jdbc.ConnectionImpl.<init>(ConnectionImpl.java:633)
        at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:347)
        at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:219)
        at com.mysql.cj.jdbc.MysqlDataSource.getConnection(MysqlDataSource.java:423)
        at com.mysql.cj.jdbc.MysqlDataSource.getConnection(MysqlDataSource.java:139)
        at com.mysql.cj.jdbc.MysqlDataSource.getConnection(MysqlDataSource.java:110)
        at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:356)
        at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:199)
        at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:444)
        at com.zaxxer.hikari.pool.HikariPool.checkFailFast(HikariPool.java:515)
        ... 46 more
Caused by: com.mysql.cj.core.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
        at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
        at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
        at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
        at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
        at com.mysql.cj.core.exceptions.ExceptionFactory.createException(ExceptionFactory.java:54)
        at com.mysql.cj.core.exceptions.ExceptionFactory.createException(ExceptionFactory.java:93)
        at com.mysql.cj.core.exceptions.ExceptionFactory.createException(ExceptionFactory.java:133)
        at com.mysql.cj.core.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:149)
        at com.mysql.cj.mysqla.io.MysqlaSocketConnection.connect(MysqlaSocketConnection.java:83)
        at com.mysql.cj.mysqla.MysqlaSession.connect(MysqlaSession.java:122)
        at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:1726)
        at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:1596)
        ... 56 more
Caused by: java.net.ConnectException: Connection refused (Connection refused)
        at java.net.PlainSocketImpl.socketConnect(Native Method)
        at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350)
        at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206)
        at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188)
        at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392)
        at java.net.Socket.connect(Socket.java:589)
        at com.mysql.cj.core.io.StandardSocketFactory.connect(StandardSocketFactory.java:202)
        at com.mysql.cj.mysqla.io.MysqlaSocketConnection.connect(MysqlaSocketConnection.java:57)
        ... 59 more

8 errors
        at com.google.inject.internal.Errors.throwCreationExceptionIfErrorsExist(Errors.java:470)
        at com.google.inject.internal.InternalInjectorCreator.injectDynamically(InternalInjectorCreator.java:184)
        at com.google.inject.internal.InternalInjectorCreator.build(InternalInjectorCreator.java:110)
        at com.google.inject.Guice.createInjector(Guice.java:99)
        at com.google.inject.Guice.createInjector(Guice.java:73)
        at com.google.inject.Guice.createInjector(Guice.java:62)
        at org.graviton.core.Application.create(Application.java:15)
        at org.graviton.core.Main.main(Main.java:12)
:graviton - game:run FAILED

[BotanAtomic]

1) Hmm, check your database, i think it's that. Also check you configuration file

2)You Mysql Server refuse the connection : Caused by: java.net.ConnectException: Connection refused (Connection refused).

Check sure you are registered in you Mysql users

3 )I'm on linux, and i can, check if your port is > than 1500. (Default Mysql : 3306) Check also, if you are logged on root, or default user.

4)Else, you can open your database for all. (Not recommended)

[Coniface]

1) I don't know what I should check though. I imported the script connecting to the database with the very same credentials I put in the config file (copy/paste multiple times from a file). I'm tempted to think that the port argument is not taken in consideration since I have a custom port on Linux but I didn't on Windows and it worked fine.

2) Ok so it must be related to the database. The mysql user is correct, I used it to import your script.

3) My port is > 1500 and it normally works with any application but not here. I was indeed logged as root.

[BotanAtomic]

Really, i don't see the problem, I'm going to explore the problem and going to contact you. Sorry, really.