Caught exception from modid (null)

[mat44]

When running my mod in eclipse it works fine but after i've builded it and put it in a normal minecraft instance it doesnt work
 

[18:53:30] [main/FATAL] [FML]: There is a severe problem with prefixchat - it appears not to have constructed correctly
[18:53:30] [main/ERROR] [FML]: Could not dispatch event: public void net.minecraftforge.fml.common.LoadController.propogateStateMessage(net.minecraftforge.fml.common.event.FMLEvent) to java.lang.NullPointerException
[18:53:30] [main/FATAL] [FML]: Fatal errors were detected during PREINITIALIZATION. Loading cannot continue.
[18:53:30] [main/FATAL] [FML]: 
	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                                |
	|:----- |:---------- |:------------ |:--------------------------------------- |:---------------------------------------- |
	| U     | minecraft  | 1.12.2       | minecraft.jar                           | None                                     |
	| U     | mcp        | 9.42         | minecraft.jar                           | None                                     |
	| U     | FML        | 8.0.99.99    | forge-1.12.2-14.23.3.2655-universal.jar | e3c3d50c7c986df74c645c0ac54639741c90a557 |
	| U     | forge      | 14.23.3.2655 | forge-1.12.2-14.23.3.2655-universal.jar | e3c3d50c7c986df74c645c0ac54639741c90a557 |
	| U     | prefixchat | 1.0          | prefixchat-1.0.jar                      | None                                     |

[18:53:30] [main/FATAL] [FML]: The following problems were captured during this phase
[18:53:30] [main/ERROR] [FML]: Caught exception from prefixchat (null)
java.lang.RuntimeException: null
	at net.minecraftforge.fml.common.LoadController.buildModObjectList(LoadController.java:314) ~[LoadController.class:?]
	at net.minecraftforge.fml.common.LoadController.propogateStateMessage(LoadController.java:250) [LoadController.class:?]
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_171]
	at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) ~[?:1.8.0_171]
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) ~[?:1.8.0_171]
	at java.lang.reflect.Method.invoke(Unknown Source) ~[?:1.8.0_171]
	at com.google.common.eventbus.Subscriber.invokeSubscriberMethod(Subscriber.java:91) ~[guava-21.0.jar:?]
	at com.google.common.eventbus.Subscriber$SynchronizedSubscriber.invokeSubscriberMethod(Subscriber.java:150) ~[guava-21.0.jar:?]
	at com.google.common.eventbus.Subscriber$1.run(Subscriber.java:76) ~[guava-21.0.jar:?]
	at com.google.common.util.concurrent.MoreExecutors$DirectExecutor.execute(MoreExecutors.java:399) ~[guava-21.0.jar:?]
	at com.google.common.eventbus.Subscriber.dispatchEvent(Subscriber.java:71) ~[guava-21.0.jar:?]
	at com.google.common.eventbus.Dispatcher$PerThreadQueuedDispatcher.dispatch(Dispatcher.java:116) ~[guava-21.0.jar:?]
	at com.google.common.eventbus.EventBus.post(EventBus.java:217) ~[guava-21.0.jar:?]
	at net.minecraftforge.fml.common.LoadController.distributeStateMessage(LoadController.java:148) [LoadController.class:?]
	at net.minecraftforge.fml.common.Loader.preinitializeMods(Loader.java:602) [Loader.class:?]
	at net.minecraftforge.fml.client.FMLClientHandler.beginMinecraftLoading(FMLClientHandler.java:270) [FMLClientHandler.class:?]
	at net.minecraft.client.Minecraft.func_71384_a(Minecraft.java:466) [bib.class:?]
	at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:377) [bib.class:?]
	at net.minecraft.client.main.Main.main(SourceFile:123) [Main.class:?]
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_171]
	at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) ~[?:1.8.0_171]
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) ~[?:1.8.0_171]
	at java.lang.reflect.Method.invoke(Unknown Source) ~[?:1.8.0_171]
	at net.minecraft.launchwrapper.Launch.launch(Launch.java:135) [launchwrapper-1.12.jar:?]
	at net.minecraft.launchwrapper.Launch.main(Launch.java:28) [launchwrapper-1.12.jar:?]
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_171]
	at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) ~[?:1.8.0_171]
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) ~[?:1.8.0_171]
	at java.lang.reflect.Method.invoke(Unknown Source) ~[?:1.8.0_171]
	at org.multimc.onesix.OneSixLauncher.launchWithMainClass(OneSixLauncher.java:196) [NewLaunch.jar:?]
	at org.multimc.onesix.OneSixLauncher.launch(OneSixLauncher.java:231) [NewLaunch.jar:?]
	at org.multimc.EntryPoint.listen(EntryPoint.java:143) [NewLaunch.jar:?]
	at org.multimc.EntryPoint.main(EntryPoint.java:34) [NewLaunch.jar:?]

 

[DaemonUmbra]

Is the source code on github?

[mat44]

Yes https://github.com/MatCorgi/PrefixChat

[DaemonUmbra]

I'm not seeing the same issue on my end, however I noticed you're missing all your gradle stuff in the repo, could you please add that.

[mat44]

Thanks for the advice! After some tweaking it seems like it was my pack.mcmeta , which had a json error (a comma in the last element of a list). The reason i did not include my gradle stuff in the repo is because theyre the default ones.

Edited May 23, 2018 by mat44
wrong reason

[MDW01]

You should still include them that way people don't have to ask about it. It is common practice and it makes it easier to diagnose issues if both dev workspaces are set up exactly the same.