issue while running tigase

[Ucheha]

am getting below exception while running tigase, am using java 8

java.lang.UnsupportedClassVersionError: module-info has been compiled by a more recent version of the Java Runtime (class file version 53.0), this version of the Java Runtime only recognizes class file versions up to 52.0
        at java.lang.ClassLoader.defineClass1(Native Method)
        at java.lang.ClassLoader.defineClass(ClassLoader.java:756)
        at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
        at java.net.URLClassLoader.defineClass(URLClassLoader.java:468)
        at java.net.URLClassLoader.access$100(URLClassLoader.java:74)
        at java.net.URLClassLoader$1.run(URLClassLoader.java:369)
        at java.net.URLClassLoader$1.run(URLClassLoader.java:363)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.net.URLClassLoader.findClass(URLClassLoader.java:362)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:418)
        at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:355)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:351)
        at java.lang.Class.forName0(Native Method)
        at java.lang.Class.forName(Class.java:348)
        at tigase.util.ClassUtil.getClassesFromNames(ClassUtil.java:176)
        at tigase.util.ClassUtil.getClassesFromClassPath(ClassUtil.java:133)
        at tigase.util.reflection.ClassUtilBean.initialize(ClassUtilBean.java:90)
        at tigase.server.Bootstrap.start(Bootstrap.java:288)
        at tigase.server.XMPPServer.start(XMPPServer.java:188)
        at tigase.server.XMPPServer.main(XMPPServer.java:142)

[woj-tek]

Which Tigase version do you use? Which components (can you share your configuration file)?

As stated in Minimum Requirements:

Java Development Kit (JDK) 11 (LTS) - We recommend OpenJDK It may be possible to run Tigase XMPP Server with JDK v8 but it is not recommended as not all features will be available and you may encounter startup issues.

[Ucheha]

tigase version 8.0.0

components:

Loading component: vhost-man :: componentInfo{Title=Tigase XMPP Server, Version=8.0.0-b5343/a5de0ed9, Class=tigase.vhosts.**VHostManager**}
Loading component: cluster-contr :: componentInfo{Title=Tigase XMPP Server, Version=8.0.0-b5343/a5de0ed9, Class=tigase.cluster.**ClusterController**}
Loading component: message-router :: componentInfo{Title=Tigase XMPP Server, Version=8.0.0-b5343/a5de0ed9, Class=tigase.server.**MessageRouter**}
Loading component: bosh :: componentInfo{Title=Tigase XMPP Server, Version=8.0.0-b5343/a5de0ed9, Class=tigase.cluster.**BoshConnectionClustered**}
Loading component: cl-comp :: componentInfo{Title=Tigase XMPP Server, Version=8.0.0-b5343/a5de0ed9, Class=tigase.cluster.**ClusterConnectionManager**}
Loading component: stats :: componentInfo{Title=Tigase XMPP Server, Version=8.0.0-b5343/a5de0ed9, Class=tigase.stats.**StatisticsCollector**}
Loading component: sess-man :: componentInfo{Title=Tigase XMPP Server, Version=8.0.0-b5343/a5de0ed9, Class=tigase.cluster.**SessionManagerClustered**}
Loading component: c2s :: componentInfo{Title=Tigase XMPP Server, Version=8.0.0-b5343/a5de0ed9, Class=tigase.cluster.**ClientConnectionClustered**}
Loading component: ws2s :: componentInfo{Title=Tigase XMPP Server, Version=8.0.0-b5343/a5de0ed9, Class=tigase.cluster.**WebSocketClientConnectionClustered**}
Loading component: monitor :: componentInfo{Title=Tigase XMPP Server, Version=8.0.0-b5343/a5de0ed9, Class=tigase.monitor.**MonitorComponent**}
Loading component: eventbus :: componentInfo{Title=Tigase XMPP Server, Version=8.0.0-b5343/a5de0ed9, Class=tigase.eventbus.component.**EventBusComponent**}
Loading component: s2s :: componentInfo{Title=Tigase XMPP Server, Version=8.0.0-b5343/a5de0ed9, Class=tigase.server.xmppserver.**S2SConnectionManager**}

plugins:

Loading plugin: ac-roster-presence=10:2063 ...  , version: 1
Loading plugin: urn:ietf:params:xml:ns:xmpp-session=2:10319 ...         , version: 1
Loading plugin: default-handler=32:644 ...      , version: 1
Loading plugin: presence-state=32:644 ...       , version: 1
Loading plugin: vcard-xep-0292=8:2579 ...       , version: 1
Loading plugin: session-open=16:1289 ...        , version: 1
Loading plugin: urn:xmpp:csi:0=8:2579 ...       , version: 1
Loading plugin: http://jabber.org/protocol/stats=8:2579 ...     , version: 1
Loading plugin: urn:xmpp:blocking=8:2579 ...    , version: 1
Loading plugin: http://jabber.org/protocol/commands=8:2579 ...  , version: 1
Loading plugin: starttls=2:10319 ...    , version: 1
Loading plugin: urn:xmpp:ping=2:10319 ...       , version: 1
Loading plugin: m800msgoffline=10:2063 ...      , version: 1
Loading plugin: vcard-temp=2:10319 ...  , version: 1
Loading plugin: jabber:iq:mcast:rooms=2:10319 ...       , version: 1
Loading plugin: urn:ietf:params:xml:ns:xmpp-bind=2:10319 ...    , version: 1
Loading plugin: presence-subscription=32:644 ...        , version: 1
Loading plugin: jabber:iq:auth=1:20639 ...      , version: 1
Loading plugin: urn:ietf:params:xml:ns:xmpp-sasl=1:20639 ...    , version: 1
Loading plugin: urn:xmpp:time=8:2579 ...        , version: 1
Loading plugin: message-carbons=8:2579 ...      , version: 1
Loading plugin: xep0012=12:1719 ...     , version: 1
Loading plugin: acker2=10:2063 ...      , version: 1
Loading plugin: disco=2:10319 ...       , version: 1
Loading plugin: zlib=8:2579 ...         , version: 1
Loading plugin: jabber:iq:register=2:10319 ...  , version: 1
Loading plugin: session-close=32:644 ...        , version: 1
Loading plugin: message=8:2579 ...      , version: 1

[woj-tek]

I assume that you've build your components with JDK8?

Version 8.0.0 (stable) should run with JVM8 without issue.

Please run this command, and share it's output, in your tigase-server installation directory:

for f in `ls jars/*.jar` ; do echo ${f}: `unzip -qc ${f} META-INF/MANIFEST.MF | grep "Build-Jdk"` ;  done