Help, My 1.12 Forge Server runs fine then it crashes

[Insert Title Here]

I was trying to make a Galacticraft Multiplayer for me and my friends

crash-2020-03-06_20.56.41-server:

---- Minecraft Crash Report ----

WARNING: coremods are present:
  MicdoodlePlugin (MicdoodleCore-1.12.2-4.0.2.244.jar)
Contact their authors BEFORE contacting forge

// Daisy, daisy...

Time: 3/6/20 8:56 PM
Description: Exception in server tick loop

java.net.UnknownHostException: 5487.cat.meow: nodename nor servname provided, or not known
    at java.net.Inet6AddressImpl.lookupAllHostAddr(Native Method)
    at java.net.InetAddress$2.lookupAllHostAddr(InetAddress.java:929)
    at java.net.InetAddress.getAddressesFromNameService(InetAddress.java:1324)
    at java.net.InetAddress.getAllByName0(InetAddress.java:1277)
    at java.net.InetAddress.getAllByName(InetAddress.java:1193)
    at java.net.InetAddress.getAllByName(InetAddress.java:1127)
    at java.net.InetAddress.getByName(InetAddress.java:1077)
    at net.minecraft.server.dedicated.DedicatedServer.func_71197_b(DedicatedServer.java:176)
    at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:486)
    at java.lang.Thread.run(Thread.java:748)

A detailed walkthrough of the error, its code path and all known details is as follows:
---------------------------------------------------------------------------------------

-- System Details --
Details:
    Minecraft Version: 1.12.2
    Operating System: Mac OS X (x86_64) version 10.14.6
    Java Version: 1.8.0_241, Oracle Corporation
    Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
    Memory: 1022534736 bytes (975 MB) / 1266155520 bytes (1207 MB) up to 3817865216 bytes (3641 MB)
    JVM Flags: 0 total; 
    IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0
    FML: MCP 9.42 Powered by Forge 14.23.5.2768 8 mods loaded, 8 mods active
    States: 'U' = Unloaded 'L' = Loaded 'C' = Constructed 'H' = Pre-initialized 'I' = Initialized 'J' = Post-initialized 'A' = Available 'D' = Disabled 'E' = Errored

    | State | ID                  | Version         | Source                                            | Signature                                |
    |:----- |:------------------- |:--------------- |:------------------------------------------------- |:---------------------------------------- |
    | UCH   | minecraft           | 1.12.2          | minecraft.jar                                     | None                                     |
    | UCH   | mcp                 | 9.42            | minecraft.jar                                     | None                                     |
    | UCH   | FML                 | 8.0.99.99       | forge-1.12.2-14.23.5.2768-universal.jar           | e3c3d50c7c986df74c645c0ac54639741c90a557 |
    | UCH   | forge               | 14.23.5.2768    | forge-1.12.2-14.23.5.2768-universal.jar           | e3c3d50c7c986df74c645c0ac54639741c90a557 |
    | UCH   | micdoodlecore       |                 | minecraft.jar                                     | None                                     |
    | UCH   | galacticraftcore    | 4.0.2.244       | GalacticraftCore-1.12.2-4.0.2.244.jar             | None                                     |
    | UCH   | galacticraftplanets | 4.0.2.244       | Galacticraft-Planets-1.12.2-4.0.2.244.jar         | None                                     |
    | UCH   | worldedit           | 6.1.10-SNAPSHOT | worldedit-forge-mc1.12.2-6.1.10-SNAPSHOT-dist.jar | None                                     |

    Loaded coremods (and transformers): 
MicdoodlePlugin (MicdoodleCore-1.12.2-4.0.2.244.jar)
  micdoodle8.mods.miccore.MicdoodleTransformer
    Profiler Position: N/A (disabled)
    Is Modded: Definitely; Server brand changed to 'fml,forge'
    Type: Dedicated Server (map_server.txt)

Edited March 6, 20205 yr by dorpg