I used to make forge servers all the time but recently got a new pc. I wanted to make a new server after a while but whenever I launch the server I am getting this error. This is a fresh server, no mods installed just forge. I assumed it could have been a Java issue perhaps but I uninstalled my 32bit for 64 and it still didn't work. I've reinstalled the forge server multiple times and still receive the same errors.

 

Crash Log:

---- Minecraft Crash Report ----
// I bet Cylons wouldn't have this problem.

Time: 4/27/20 12:21 AM
Description: Exception in server tick loop

java.lang.NullPointerException: Exception in server tick loop
	at net.minecraftforge.fml.loading.moddiscovery.BackgroundScanHandler.waitForScanToComplete(BackgroundScanHandler.java:97) ~[forge.jar:?] {}
	at net.minecraftforge.fml.ModLoader.gatherAndInitializeMods(ModLoader.java:178) ~[?:?] {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:613) [?:?] {re:classloading,pl:accesstransformer:B,pl:runtimedistcleaner:A}
	at java.lang.Thread.run(Unknown Source) [?:1.8.0_251] {}


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: Windows 10 (amd64) version 10.0
	Java Version: 1.8.0_251, Oracle Corporation
	Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
	Memory: 3311730624 bytes (3158 MB) / 4054843392 bytes (3867 MB) up to 4054843392 bytes (3867 MB)
	CPUs: 12
	JVM Flags: 2 total; -Xmx4096M -Xms4096M
	ModLauncher: 5.1.0+69+master.79f13f7
	ModLauncher launch target: fmlserver
	ModLauncher naming: srg
	ModLauncher services: 
		/eventbus-2.1.0-service.jar eventbus PLUGINSERVICE 
		/forge.jar object_holder_definalize PLUGINSERVICE 
		/forge.jar runtime_enum_extender PLUGINSERVICE 
		/accesstransformers-2.1.1-shadowed.jar accesstransformer PLUGINSERVICE 
		/forge.jar capability_inject_definalize PLUGINSERVICE 
		/forge.jar runtimedistcleaner PLUGINSERVICE 
		/forge.jar fml TRANSFORMATIONSERVICE 
	FML: 31.1
	Forge: net.minecraftforge:31.1.59
	FML Language Providers: 
		[email protected]
		minecraft@1
	Data Packs: 
	Is Modded: Definitely; Server brand changed to 'forge'
	Type: Dedicated Server (map_server.txt)

 

 

debug-1.log.gz

Just now, diesieben07 said:

Seems to be bug in recent Forge. Downgrade to 15.2-31.1.51.

Thank you so much! I just did that and now it's running just fine. Saved me hours of frustration for something so small