Errors when i do /oi and /oe

[bandithello1]

Im running paper 1.12.2 and running openinv and when ever i do /oe or /oi it gives me

[08:07:14 WARN]: java.lang.IllegalAccessException: Can not set final net.minecraft.server.v1_12_R1.NonNullList field net.minecraft.server.v1_12_R1.PlayerInventory.items to net.minecraft.server.v1_12_R1.NonNullList [08:07:14 WARN]: at java.base/jdk.internal.reflect.UnsafeFieldAccessorImpl.throwFinalFieldIllegalAccessException(UnsafeFieldAccessorImpl.java:76) [08:07:14 WARN]: at java.base/jdk.internal.reflect.UnsafeFieldAccessorImpl.throwFinalFieldIllegalAccessException(UnsafeFieldAccessorImpl.java:80) [08:07:14 WARN]: at java.base/jdk.internal.reflect.UnsafeQualifiedObjectFieldAccessorImpl.set(UnsafeQualifiedObjectFieldAccessorImpl.java:79) [08:07:14 WARN]: at java.base/java.lang.reflect.Field.set(Field.java:780) [08:07:14 WARN]: at com.lishid.openinv.internal.v1_12_R1.SpecialPlayerInventory.setItemArrays(SpecialPlayerInventory.java:165) [08:07:14 WARN]: at com.lishid.openinv.internal.v1_12_R1.SpecialPlayerInventory.(SpecialPlayerInventory.java:44) [08:07:14 WARN]: at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) [08:07:14 WARN]: at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62) [08:07:14 WARN]: at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) [08:07:14 WARN]: at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:490) [08:07:14 WARN]: at com.lishid.openinv.util.InternalAccessor.createObject(InternalAccessor.java:103) [08:07:14 WARN]: at com.lishid.openinv.util.InternalAccessor.newSpecialPlayerInventory(InternalAccessor.java:210) [08:07:14 WARN]: at com.lishid.openinv.OpenInv.getSpecialInventory(OpenInv.java:327) [08:07:14 WARN]: at com.lishid.openinv.commands.OpenInvPluginCommand.openInventory(OpenInvPluginCommand.java:148) [08:07:14 WARN]: at com.lishid.openinv.commands.OpenInvPluginCommand.access$100(OpenInvPluginCommand.java:33) [08:07:14 WARN]: at com.lishid.openinv.commands.OpenInvPluginCommand$1$1.run(OpenInvPluginCommand.java:89) [08:07:14 WARN]: at org.bukkit.craftbukkit.v1_12_R1.scheduler.CraftTask.run(CraftTask.java:64) [08:07:14 WARN]: at org.bukkit.craftbukkit.v1_12_R1.scheduler.CraftScheduler.mainThreadHeartbeat(CraftScheduler.java:423) [08:07:14 WARN]: at net.minecraft.server.v1_12_R1.MinecraftServer.D(MinecraftServer.java:840) [08:07:14 WARN]: at net.minecraft.server.v1_12_R1.DedicatedServer.D(DedicatedServer.java:423) [08:07:14 WARN]: at net.minecraft.server.v1_12_R1.MinecraftServer.C(MinecraftServer.java:774) [08:07:14 WARN]: at net.minecraft.server.v1_12_R1.MinecraftServer.run(MinecraftServer.java:666) [08:07:14 WARN]: at java.base/java.lang.Thread.run(Thread.java:834) these errors please respond asap

[Jikoo]

If you want to use an outdated server, you must use a matching outdated Java version. Either update your server to a modern version or downgrade to Java 8.

[Jikoo]

Duplicate of #173