Error when trying to import SpongeVanilla

Plugins Plugin Development
1

So I’m trying to set up my IDE (intelliJ) so I can actually use the debugger, and I followed the instructions and got all the modules imported, but when I actually try to run GradleStartServer I get this error:

    [14:50:49 ERROR] [LaunchWrapper]: Unable to launch
java.lang.ClassNotFoundException: net.minecraft.client.Minecraft
	at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:191) ~[launchwrapper-1.11.jar:?]
	at java.lang.ClassLoader.loadClass(ClassLoader.java:424) ~[?:1.8.0_221]
	at java.lang.ClassLoader.loadClass(ClassLoader.java:357) ~[?:1.8.0_221]
	at java.lang.Class.forName0(Native Method) ~[?:1.8.0_221]
	at java.lang.Class.forName(Class.java:348) ~[?:1.8.0_221]
	at net.minecraft.launchwrapper.Launch.launch(Launch.java:131) ~[launchwrapper-1.11.jar:?]
	at net.minecraft.launchwrapper.Launch.main(Launch.java:28) ~[launchwrapper-1.11.jar:?]
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_221]
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_221]
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_221]
	at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_221]
	at net.minecraftforge.gradle.GradleStartCommon.launch(GradleStartCommon.java:97) ~[start/:?]
	at GradleStartServer.main(GradleStartServer.java:10) ~[start/:?]
Caused by: java.lang.NullPointerException
	at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:182) ~[launchwrapper-1.11.jar:?]
	... 12 more

I’ve tried creating a container module and adding SpongeVanilla to that, like it says you may have to do on the docs, but it still produces this error. Any help is appreciated.

2

That sounds like MCP isnt actvating. How are you launching the server?

3

Solved by setting the main class of the run config to VanillaServerMain instead of GradleStartServer.