Versions

• Minecraft: 1.16.4

• Forge: 35.1.15

• Vampirism: 1.7.4

• ModPack: N/A

Issue Description

Error when I run Vampirism 1.7.4 on server, but not on client

Reproduce Steps

Install on forge server, I can send personal modpack if desired.

Additional Information

-- Head --
Thread: main
Stacktrace:
at net.minecraftforge.fml.loading.RuntimeDistCleaner.processClassWithFlags(RuntimeDistCleaner.java:71) ~[forge-1.16.4-35.1.15.jar:35.1] {}
-- MOD vampirism --
Details:
Mod File: Mob - Vampirism.jar
Failure message: Vampirism (vampirism) has failed to load correctly
java.lang.RuntimeException: Attempted to load class net/minecraft/client/gui/screen/Screen for invalid dist DEDICATED_SERVER
Mod Version: 1.7.4
Mod Issue URL: https://github.com/TeamLapen/Vampirism/issues
Exception message: java.lang.RuntimeException: Attempted to load class net/minecraft/client/gui/screen/Screen for invalid dist DEDICATED_SERVER
Stacktrace:
at net.minecraftforge.fml.loading.RuntimeDistCleaner.processClassWithFlags(RuntimeDistCleaner.java:71) ~[forge-1.16.4-35.1.15.jar:35.1] {}
at cpw.mods.modlauncher.LaunchPluginHandler.offerClassNodeToPlugins(LaunchPluginHandler.java:85) ~[modlauncher-8.0.6.jar:?] {}
at cpw.mods.modlauncher.ClassTransformer.transform(ClassTransformer.java:119) ~[modlauncher-8.0.6.jar:?] {}
at cpw.mods.modlauncher.TransformingClassLoader$DelegatedClassLoader.findClass(TransformingClassLoader.java:265) ~[modlauncher-8.0.6.jar:?] {}
at cpw.mods.modlauncher.TransformingClassLoader.loadClass(TransformingClassLoader.java:136) ~[modlauncher-8.0.6.jar:?] {re:classloading}
at cpw.mods.modlauncher.TransformingClassLoader.loadClass(TransformingClassLoader.java:98) ~[modlauncher-8.0.6.jar:?] {re:classloading}
at java.lang.ClassLoader.loadClass(Unknown Source) ~[?:1.8.0_271] {}
at java.lang.Class.forName0(Native Method) ~[?:1.8.0_271] {}
at java.lang.Class.forName(Unknown Source) ~[?:1.8.0_271] {}
at de.teamlapen.lib.util.OptifineHandler.isOptifineLoaded(OptifineHandler.java:24) ~[vampirism:1.7.4] {re:classloading}
at de.teamlapen.vampirism.VampirismMod.(VampirismMod.java:160) ~[vampirism:1.7.4] {re:mixin,re:classloading}
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) ~[?:1.8.0_271] {}
at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source) ~[?:1.8.0_271] {}
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source) ~[?:1.8.0_271] {}
at java.lang.reflect.Constructor.newInstance(Unknown Source) ~[?:1.8.0_271] {}
at java.lang.Class.newInstance(Unknown Source) ~[?:1.8.0_271] {}
at net.minecraftforge.fml.javafmlmod.FMLModContainer.constructMod(FMLModContainer.java:81) ~[forge:35.1] {re:classloading}
at net.minecraftforge.fml.ModContainer.lambda$buildTransitionHandler$4(ModContainer.java:120) ~[forge:?] {re:classloading}
at java.util.concurrent.CompletableFuture$AsyncRun.run(Unknown Source) ~[?:1.8.0_271] {}
at java.util.concurrent.CompletableFuture$AsyncRun.exec(Unknown Source) ~[?:1.8.0_271] {}
at java.util.concurrent.ForkJoinTask.doExec(Unknown Source) ~[?:1.8.0_271] {}
at java.util.concurrent.ForkJoinPool$WorkQueue.runTask(Unknown Source) ~[?:1.8.0_271] {}
at java.util.concurrent.ForkJoinPool.runWorker(Unknown Source) ~[?:1.8.0_271] {re:computing_frames}
at java.util.concurrent.ForkJoinWorkerThread.run(Unknown Source) ~[?:1.8.0_271] {}

Is Optifine in the server's mod directory? If so, can you remove it there and try again?

Yet, Vampirism should probably not crash even if Optifine is present.
Will fix eventually

This is true. For more context, I upgraded the mod in my modlist, but vampirism(pre mc 1.16.5) did work in this setup with optifine before.

That worked. So no Optifine and Vampirism I guess? Or am I doing Optifine wrong?

Optifine is a client only mod, so it should not be in the server's mod directory.

Ah, I see, thank you!

maybe just insert a DistExecutor#safeRunWhenOn when calling