We've (myself and a friend) been running a forge server just fine using the .jar file, but using the command line to open it just caused it to crash so we ignored it.

 

We've tried using many different versions of java, restarts, lots of edits to the command line, deleting .jsons, etc.

 

The command line paths correctly to the server, but it just crashes with this error that neither of us can figure out the source of.

 

Interestingly enough, we were getting this error with the .jar file because the IP was wrong, but after fixing the IP, the forge .jar works but the command line doesn't???

 

Crash log:

Spoiler

---- Minecraft Crash Report ----
// I let you down. Sorry

Time: 2/18/20, 3:33 PM
Description: Exception in server tick loop

java.lang.ExceptionInInitializerError: null
    at net.minecraftforge.fml.ModLoader.<init>(ModLoader.java:121) ~[?:?] {re:classloading}
    at net.minecraftforge.fml.ModLoader.get(ModLoader.java:146) ~[?:?] {re:classloading}
    at net.minecraftforge.fml.server.ServerModLoader.begin(ServerModLoader.java:45) ~[?:?] {re:classloading}
    at net.minecraft.server.dedicated.DedicatedServer.func_71197_b(DedicatedServer.java:122) ~[?:?] {re:classloading,pl:accesstransformer:B}
    at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:611) [?:?] {re:classloading,pl:accesstransformer:B,pl:runtimedistcleaner:A}
    at java.lang.Thread.run(Thread.java:830) [?:?] {}
Caused by: java.lang.IllegalStateException: Failed to resolve consumer event type: net.minecraftforge.fml.network.simple.SimpleChannel$$Lambda$2831/0x0000000801450440@65ab2001
    at net.minecraftforge.eventbus.EventBus.addListener(EventBus.java:194) ~[eventbus-2.0.0-milestone.1-service.jar:?] {}
    at net.minecraftforge.eventbus.EventBus.addListener(EventBus.java:161) ~[eventbus-2.0.0-milestone.1-service.jar:?] {}
    at net.minecraftforge.eventbus.EventBus.addListener(EventBus.java:156) ~[eventbus-2.0.0-milestone.1-service.jar:?] {}
    at net.minecraftforge.eventbus.EventBus.addListener(EventBus.java:151) ~[eventbus-2.0.0-milestone.1-service.jar:?] {}
    at net.minecraftforge.fml.network.NetworkInstance.addListener(NetworkInstance.java:65) ~[?:?] {re:classloading}
    at net.minecraftforge.fml.network.simple.SimpleChannel.<init>(SimpleChannel.java:56) ~[?:?] {re:classloading}
    at net.minecraftforge.fml.network.simple.SimpleChannel.<init>(SimpleChannel.java:49) ~[?:?] {re:classloading}
    at net.minecraftforge.fml.network.NetworkRegistry$ChannelBuilder.simpleChannel(NetworkRegistry.java:409) ~[?:?] {re:classloading}
    at net.minecraftforge.fml.network.NetworkInitialization.getHandshakeChannel(NetworkInitialization.java:38) ~[?:?] {re:classloading}
    at net.minecraftforge.fml.network.FMLNetworkConstants.<clinit>(FMLNetworkConstants.java:48) ~[?:?] {re:classloading}
    ... 6 more

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

-- System Details --
Details:
    Minecraft Version: 1.15.2
    Minecraft Version ID: 1.15.2
    Operating System: Mac OS X (x86_64) version 10.14.6
    Java Version: 13.0.2, Oracle Corporation
    Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode, sharing), Oracle Corporation
    Memory: 4151871880 bytes (3959 MB) / 4294967296 bytes (4096 MB) up to 4294967296 bytes (4096 MB)
    CPUs: 12
    JVM Flags: 2 total; -Xmx4G -Xms4G
    Data Packs: 
    Is Modded: Definitely; Server brand changed to 'forge'
    Type: Dedicated Server (map_server.txt)

Command Line:

Spoiler

#!/bin/bash
cd "$(dirname "$0")"
java -Xmx4G -Xms4G -jar forge-1.15.2-31.1.0.jar nogui

Debug log:

Spoiler

https://pastebin.com/zgDXFHyZ

Latest log:

Spoiler

[18Feb2020 15:31:32.327] [main/INFO] [cpw.mods.modlauncher.Launcher/MODLAUNCHER]: ModLauncher running: args [--gameDir, ., --launchTarget, fmlserver, --fml.forgeVersion, 31.1.0, --fml.mcpVersion, 20200122.131323, --fml.mcVersion, 1.15.2, --fml.forgeGroup, net.minecraftforge]
[18Feb2020 15:31:32.330] [main/INFO] [cpw.mods.modlauncher.Launcher/MODLAUNCHER]: ModLauncher 5.0.0-milestone.4+67+b1a340b starting: java version 13.0.2 by Oracle Corporation
[18Feb2020 15:31:32.566] [main/INFO] [net.minecraftforge.fml.loading.FixSSL/CORE]: Added Lets Encrypt root certificates as additional trust
[18Feb2020 15:31:33.006] [main/INFO] [STDERR/]: [jdk.nashorn.api.scripting.NashornScriptEngine:<init>:143]: Warning: Nashorn engine is planned to be removed from a future JDK release
[18Feb2020 15:31:33.169] [main/INFO] [STDERR/]: [jdk.nashorn.api.scripting.NashornScriptEngine:<init>:143]: Warning: Nashorn engine is planned to be removed from a future JDK release
[18Feb2020 15:31:33.176] [main/INFO] [STDERR/]: [jdk.nashorn.api.scripting.NashornScriptEngine:<init>:143]: Warning: Nashorn engine is planned to be removed from a future JDK release
[18Feb2020 15:31:33.184] [main/INFO] [STDERR/]: [jdk.nashorn.api.scripting.NashornScriptEngine:<init>:143]: Warning: Nashorn engine is planned to be removed from a future JDK release
[18Feb2020 15:31:33.533] [main/INFO] [cpw.mods.modlauncher.LaunchServiceHandler/MODLAUNCHER]: Launching target 'fmlserver' with arguments [--gameDir, .]
[18Feb2020 15:31:42.029] [main/WARN] [net.minecraft.command.Commands/]: Ambiguity between arguments [teleport, destination] and [teleport, targets] with inputs: [Player, 0123, @e, dd12be42-52a9-4a91-a8a1-11c01849e498]
[18Feb2020 15:31:42.032] [main/WARN] [net.minecraft.command.Commands/]: Ambiguity between arguments [teleport, location] and [teleport, destination] with inputs: [0.1 -0.5 .9, 0 0 0]
[18Feb2020 15:31:42.034] [main/WARN] [net.minecraft.command.Commands/]: Ambiguity between arguments [teleport, location] and [teleport, targets] with inputs: [0.1 -0.5 .9, 0 0 0]
[18Feb2020 15:31:42.037] [main/WARN] [net.minecraft.command.Commands/]: Ambiguity between arguments [teleport, targets] and [teleport, destination] with inputs: [Player, 0123, dd12be42-52a9-4a91-a8a1-11c01849e498]
[18Feb2020 15:31:42.040] [main/WARN] [net.minecraft.command.Commands/]: Ambiguity between arguments [teleport, targets, location] and [teleport, targets, destination] with inputs: [0.1 -0.5 .9, 0 0 0]
[18Feb2020 15:31:44.263] [Server thread/INFO] [net.minecraft.server.dedicated.DedicatedServer/]: Starting minecraft server version 1.15.2
[18Feb2020 15:31:44.506] [Server thread/ERROR] [net.minecraftforge.eventbus.EventBus/EVENTBUS]: Failed to resolve handler for "net.minecraftforge.fml.network.simple.SimpleChannel$$Lambda$2955/0x000000080151d040@29598047"
[18Feb2020 15:31:44.507] [Server thread/ERROR] [net.minecraft.server.MinecraftServer/]: Encountered an unexpected exception
java.lang.ExceptionInInitializerError: null
    at net.minecraftforge.fml.ModLoader.<init>(ModLoader.java:121) ~[?:?]
    at net.minecraftforge.fml.ModLoader.get(ModLoader.java:146) ~[?:?]
    at net.minecraftforge.fml.server.ServerModLoader.begin(ServerModLoader.java:45) ~[?:?]
    at net.minecraft.server.dedicated.DedicatedServer.func_71197_b(DedicatedServer.java:122) ~[?:?]
    at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:611) [?:?]
    at java.lang.Thread.run(Thread.java:830) [?:?]
Caused by: java.lang.IllegalStateException: Failed to resolve consumer event type: net.minecraftforge.fml.network.simple.SimpleChannel$$Lambda$2955/0x000000080151d040@29598047
    at net.minecraftforge.eventbus.EventBus.addListener(EventBus.java:194) ~[eventbus-2.0.0-milestone.1-service.jar:?]
    at net.minecraftforge.eventbus.EventBus.addListener(EventBus.java:161) ~[eventbus-2.0.0-milestone.1-service.jar:?]
    at net.minecraftforge.eventbus.EventBus.addListener(EventBus.java:156) ~[eventbus-2.0.0-milestone.1-service.jar:?]
    at net.minecraftforge.eventbus.EventBus.addListener(EventBus.java:151) ~[eventbus-2.0.0-milestone.1-service.jar:?]
    at net.minecraftforge.fml.network.NetworkInstance.addListener(NetworkInstance.java:65) ~[?:?]
    at net.minecraftforge.fml.network.simple.SimpleChannel.<init>(SimpleChannel.java:56) ~[?:?]
    at net.minecraftforge.fml.network.simple.SimpleChannel.<init>(SimpleChannel.java:49) ~[?:?]
    at net.minecraftforge.fml.network.NetworkRegistry$ChannelBuilder.simpleChannel(NetworkRegistry.java:409) ~[?:?]
    at net.minecraftforge.fml.network.NetworkInitialization.getHandshakeChannel(NetworkInitialization.java:38) ~[?:?]
    at net.minecraftforge.fml.network.FMLNetworkConstants.<clinit>(FMLNetworkConstants.java:48) ~[?:?]
    ... 6 more
[18Feb2020 15:31:44.517] [Server thread/ERROR] [net.minecraft.server.MinecraftServer/]: This crash report has been saved to: /Volumes/Files/ForgeMine/./crash-reports/crash-2020-02-18_15.31.44-server.txt
[18Feb2020 15:31:44.560] [Server thread/INFO] [net.minecraft.server.MinecraftServer/]: Stopping server
[18Feb2020 15:31:44.561] [Server thread/INFO] [net.minecraft.server.MinecraftServer/]: Saving worlds
[18Feb2020 15:31:44.566] [Server thread/ERROR] [net.minecraft.server.MinecraftServer/]: Exception stopping the server
java.lang.IllegalArgumentException: Can not hotload overworld. This must be loaded at all times by main Server.
    at org.apache.commons.lang3.Validate.isTrue(Validate.java:158) ~[server-1.15.2-extra.jar:?]
    at net.minecraftforge.common.DimensionManager.initWorld(DimensionManager.java:229) ~[?:?]
    at net.minecraftforge.common.DimensionManager.getWorld(DimensionManager.java:198) ~[?:?]
    at net.minecraft.server.MinecraftServer.func_71218_a(MinecraftServer.java:1002) ~[?:?]
    at net.minecraft.server.MinecraftServer.func_213211_a(MinecraftServer.java:534) ~[?:?]
    at net.minecraft.server.MinecraftServer.func_71260_j(MinecraftServer.java:566) ~[?:?]
    at net.minecraft.server.dedicated.DedicatedServer.func_71260_j(DedicatedServer.java:549) ~[?:?]
    at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:674) [?:?]
    at java.lang.Thread.run(Thread.java:830) [?:?]
 

Note: we do have proper permissions from using chmod 755 on the jar

What java installation are you using?

6 hours ago, LexManos said:

What java installation are you using?

It says up there in the first Spoiler,     Java Version: 13.0.2 (Hotspot)

Just now, diesieben07 said:

You should stick with Java 8 for the time being as that is also the version targeted by Mojang.

We tried that. We removed all versions of Java and then installed, restarted the computer, and attempted to use Java 8, 11, AND 13, and got the same results every time.

Just now, diesieben07 said:

Please post a log with Java 8.

Alright, soon as my pal wakes up