Minecraft disconnects whenever I try to change dimensions in forge 1.12.2

[Christopher44712]

Heres the output

[16:50:52] [Server thread/INFO] [FML]: Loading dimension 5 (world) (net.minecraft.server.dedicated.DedicatedServer@2f924b5c)
[16:50:52] [Server thread/INFO] [Galacticraft]: Found matching world (5) for name: 5
[16:50:52] [Server thread/INFO] [Galacticraft]: Server attempting to transfer player DeleterXerte to dimension 5
[16:51:16] [Server thread/WARN] [minecraft/MinecraftServer]: Can't keep up! Did the system time change, or is the server overloaded? Running 3685ms behind, skipping 73 tick(s)
[16:51:16] [Netty Server IO #1/ERROR] [FML]: NetworkDispatcher exception
java.io.IOException: An existing connection was forcibly closed by the remote host
        at sun.nio.ch.SocketDispatcher.read0(Native Method) ~[?:1.8.0_291]
        at sun.nio.ch.SocketDispatcher.read(Unknown Source) ~[?:1.8.0_291]
        at sun.nio.ch.IOUtil.readIntoNativeBuffer(Unknown Source) ~[?:1.8.0_291]
        at sun.nio.ch.IOUtil.read(Unknown Source) ~[?:1.8.0_291]
        at sun.nio.ch.SocketChannelImpl.read(Unknown Source) ~[?:1.8.0_291]
        at io.netty.buffer.PooledUnsafeDirectByteBuf.setBytes(PooledUnsafeDirectByteBuf.java:288) ~[PooledUnsafeDirectByteBuf.class:?]
        at io.netty.buffer.AbstractByteBuf.writeBytes(AbstractByteBuf.java:1100) ~[AbstractByteBuf.class:?]
        at io.netty.channel.socket.nio.NioSocketChannel.doReadBytes(NioSocketChannel.java:372) ~[NioSocketChannel.class:?]
        at io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:123) [AbstractNioByteChannel$NioByteUnsafe.class:?]
        at io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:624) [NioEventLoop.class:?]
        at io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:559) [NioEventLoop.class:?]
        at io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:476) [NioEventLoop.class:?]
        at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:438) [NioEventLoop.class:?]
        at io.netty.util.concurrent.SingleThreadEventExecutor$5.run(SingleThreadEventExecutor.java:858) [SingleThreadEventExecutor$5.class:?]
        at java.lang.Thread.run(Unknown Source) [?:1.8.0_291]
[16:51:19] [Server thread/INFO] [minecraft/NetHandlerPlayServer]: DeleterXerte lost connection: Disconnected
[16:51:19] [Server thread/INFO] [minecraft/DedicatedServer]: Nebula left the game
[16:51:20] [Server thread/INFO] [FML]: Unloading dimension 5

So as you can see I disconnected when I tried to enter this specific dimension. But it isnt just that dimension. I always disconnect whenever I try to enter ANY dimension. Help.