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Forge server file raises an error


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I was trying to install Forge server 1.16.5. After installation from Forge installer I ran Forge jar file to create needed folders, files etc. However, in the console I got the following output:

Exception in thread "main" [19:54:55] [main/INFO] [STDERR/]: [java.lang.ThreadGroup:uncaughtException:1048]: java.lang.NullPointerException: Cannot invoke "java.nio.file.Path.getFileSystem()" because "path" is null
[19:54:55] [main/INFO] [STDERR/]: [java.lang.ThreadGroup:uncaughtException:1048]:
        at java.base/java.nio.file.Files.provider(Files.java:105)
[19:54:55] [main/INFO] [STDERR/]: [java.lang.ThreadGroup:uncaughtException:1048]:
        at java.base/java.nio.file.Files.isDirectory(Files.java:2308)
[19:54:55] [main/INFO] [STDERR/]: [java.lang.ThreadGroup:uncaughtException:1048]:
        at net.minecraftforge.fml.loading.FileUtils.getOrCreateDirectory(FileUtils.java:37)
[19:54:55] [main/INFO] [STDERR/]: [java.lang.ThreadGroup:uncaughtException:1048]:
        at net.minecraftforge.fml.loading.FMLPaths.loadAbsolutePaths(FMLPaths.java:76)
[19:54:55] [main/INFO] [STDERR/]: [java.lang.ThreadGroup:uncaughtException:1048]:
        at net.minecraftforge.fml.loading.FMLPaths.setup(FMLPaths.java:66)
[19:54:55] [main/INFO] [STDERR/]: [java.lang.ThreadGroup:uncaughtException:1048]:
        at net.minecraftforge.fml.loading.FMLServiceProvider.initialize(FMLServiceProvider.java:79)
[19:54:55] [main/INFO] [STDERR/]: [java.lang.ThreadGroup:uncaughtException:1048]:
        at cpw.mods.modlauncher.TransformationServiceDecorator.onInitialize(TransformationServiceDecorator.java:68)
[19:54:55] [main/INFO] [STDERR/]: [java.lang.ThreadGroup:uncaughtException:1048]:
        at cpw.mods.modlauncher.TransformationServicesHandler.lambda$initialiseTransformationServices$7(TransformationServicesHandler.java:107)
[19:54:55] [main/INFO] [STDERR/]: [java.lang.ThreadGroup:uncaughtException:1048]:
        at java.base/java.util.HashMap$Values.forEach(HashMap.java:1067)
[19:54:55] [main/INFO] [STDERR/]: [java.lang.ThreadGroup:uncaughtException:1048]:
        at cpw.mods.modlauncher.TransformationServicesHandler.initialiseTransformationServices(TransformationServicesHandler.java:107)
[19:54:55] [main/INFO] [STDERR/]: [java.lang.ThreadGroup:uncaughtException:1048]:
        at cpw.mods.modlauncher.TransformationServicesHandler.initializeTransformationServices(TransformationServicesHandler.java:59)
[19:54:55] [main/INFO] [STDERR/]: [java.lang.ThreadGroup:uncaughtException:1048]:
        at cpw.mods.modlauncher.Launcher.run(Launcher.java:76)
[19:54:55] [main/INFO] [STDERR/]: [java.lang.ThreadGroup:uncaughtException:1048]:
        at cpw.mods.modlauncher.Launcher.main(Launcher.java:66)
[19:54:55] [main/INFO] [STDERR/]: [java.lang.ThreadGroup:uncaughtException:1048]:
        at net.minecraftforge.server.ServerMain$Runner.runLauncher(ServerMain.java:63)
[19:54:55] [main/INFO] [STDERR/]: [java.lang.ThreadGroup:uncaughtException:1048]:
        at net.minecraftforge.server.ServerMain$Runner.access$100(ServerMain.java:60)
[19:54:55] [main/INFO] [STDERR/]: [java.lang.ThreadGroup:uncaughtException:1048]:
        at net.minecraftforge.server.ServerMain.main(ServerMain.java:57)

I have created a bat file to run it:

@echo off
c:
"Program Files\Java\jdk-15.0.2\bin\java.exe" -Xms1024M -Xmx6192M -XX:+UseG1GC -jar "E:\Games\Minecraft Servers\1.16.5+mods\forgeserver.jar"
pause

 

Edited by tokechu
Grammar
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Here is debug.log:

[19Apr2021 20:46:59.810] [main/INFO] [cpw.mods.modlauncher.Launcher/MODLAUNCHER]: ModLauncher running: args [--gameDir, ., --launchTarget, fmlserver, --fml.forgeVersion, 36.1.0, --fml.mcpVersion, 20210115.111550, --fml.mcVersion, 1.16.5, --fml.forgeGroup, net.minecraftforge]
[19Apr2021 20:46:59.816] [main/INFO] [cpw.mods.modlauncher.Launcher/MODLAUNCHER]: ModLauncher 8.0.9+86+master.3cf110c starting: java version 16 by Oracle Corporation
[19Apr2021 20:46:59.832] [main/DEBUG] [cpw.mods.modlauncher.LaunchServiceHandler/MODLAUNCHER]: Found launch services [minecraft,testharness,fmlclient,fmlserver]

 

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    • I found a strange bug that can be reproduced by steps: Create empty gradle project(without any plugins) (by intellij idea) Create submodule `app` which contain regular forge mdk Create submodule `common` which contain annotation `Mark` and class `ClassFromSubmodule`  Create submodule `annotation-processor` which contain anootation processor which generate simple companion class for each class annotated with `@Mark` Add some code: //Test.java, `app` submodule //annotation processor will generate TestCompanion for it(and he doing it) @Mark public class Test { } //Main.java, `app` submodule @Mod("strange_bug") public class Main { public Main() { try { System.out.println("Main successful: " + Class.forName("hohserg.strange.bug.TestCompanion")); } catch (ClassNotFoundException e) { System.out.println("Main failed: "); e.printStackTrace(); } ClassFromSubmodule.test(); } } //ClassFromSubmodule.java, `common` submodule public class ClassFromSubmodule { public static void test() { try { System.out.println("ClassFromSubmodule successful: " + Class.forName("hohserg.strange.bug.TestCompanion")); } catch (Throwable e) { System.out.println("ClassFromSubmodule failed: "); e.printStackTrace(); } } } Run `gradle :app:genIntellijRuns` Try run client Got follow log (time mark removed): [modloading-worker-0/INFO] [STDOUT/]: [hohserg.strange.bug.Main:<init>:9]: Main successful: class hohserg.strange.bug.TestCompanion [modloading-worker-0/INFO] [STDOUT/]: [hohserg.strange.bug.ClassFromSubmodule:test:8]: ClassFromSubmodule failed: [modloading-worker-0/INFO] [STDERR/]: [hohserg.strange.bug.ClassFromSubmodule:test:9]: java.lang.ClassNotFoundException: hohserg.strange.bug.TestCompanion [modloading-worker-0/INFO] [STDERR/]: [hohserg.strange.bug.ClassFromSubmodule:test:9]: at java.net.URLClassLoader.findClass(URLClassLoader.java:382) [modloading-worker-0/INFO] [STDERR/]: [hohserg.strange.bug.ClassFromSubmodule:test:9]: at java.lang.ClassLoader.loadClass(ClassLoader.java:418) [modloading-worker-0/INFO] [STDERR/]: [hohserg.strange.bug.ClassFromSubmodule:test:9]: at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:355) [modloading-worker-0/INFO] [STDERR/]: [hohserg.strange.bug.ClassFromSubmodule:test:9]: at java.lang.ClassLoader.loadClass(ClassLoader.java:351) [modloading-worker-0/INFO] [STDERR/]: [hohserg.strange.bug.ClassFromSubmodule:test:9]: at java.lang.Class.forName0(Native Method) [modloading-worker-0/INFO] [STDERR/]: [hohserg.strange.bug.ClassFromSubmodule:test:9]: at java.lang.Class.forName(Class.java:264) [modloading-worker-0/INFO] [STDERR/]: [hohserg.strange.bug.ClassFromSubmodule:test:9]: at hohserg.strange.bug.ClassFromSubmodule.test(ClassFromSubmodule.java:6) [modloading-worker-0/INFO] [STDERR/]: [hohserg.strange.bug.ClassFromSubmodule:test:9]: at hohserg.strange.bug.Main.<init>(Main.java:14) [modloading-worker-0/INFO] [STDERR/]: [hohserg.strange.bug.ClassFromSubmodule:test:9]: at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) [modloading-worker-0/INFO] [STDERR/]: [hohserg.strange.bug.ClassFromSubmodule:test:9]: at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62) [modloading-worker-0/INFO] [STDERR/]: [hohserg.strange.bug.ClassFromSubmodule:test:9]: at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) [modloading-worker-0/INFO] [STDERR/]: [hohserg.strange.bug.ClassFromSubmodule:test:9]: at java.lang.reflect.Constructor.newInstance(Constructor.java:423) [modloading-worker-0/INFO] [STDERR/]: [hohserg.strange.bug.ClassFromSubmodule:test:9]: at java.lang.Class.newInstance(Class.java:442) [modloading-worker-0/INFO] [STDERR/]: [hohserg.strange.bug.ClassFromSubmodule:test:9]: at net.minecraftforge.fml.javafmlmod.FMLModContainer.constructMod(FMLModContainer.java:81) [modloading-worker-0/INFO] [STDERR/]: [hohserg.strange.bug.ClassFromSubmodule:test:9]: at net.minecraftforge.fml.ModContainer.lambda$buildTransitionHandler$4(ModContainer.java:120) [modloading-worker-0/INFO] [STDERR/]: [hohserg.strange.bug.ClassFromSubmodule:test:9]: at java.util.concurrent.CompletableFuture$AsyncRun.run$$$capture(CompletableFuture.java:1640) [modloading-worker-0/INFO] [STDERR/]: [hohserg.strange.bug.ClassFromSubmodule:test:9]: at java.util.concurrent.CompletableFuture$AsyncRun.run(CompletableFuture.java) [modloading-worker-0/INFO] [STDERR/]: [hohserg.strange.bug.ClassFromSubmodule:test:9]: at java.util.concurrent.CompletableFuture$AsyncRun.exec(CompletableFuture.java:1632) [modloading-worker-0/INFO] [STDERR/]: [hohserg.strange.bug.ClassFromSubmodule:test:9]: at java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java:289) [modloading-worker-0/INFO] [STDERR/]: [hohserg.strange.bug.ClassFromSubmodule:test:9]: at java.util.concurrent.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1056) [modloading-worker-0/INFO] [STDERR/]: [hohserg.strange.bug.ClassFromSubmodule:test:9]: at java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1692) [modloading-worker-0/INFO] [STDERR/]: [hohserg.strange.bug.ClassFromSubmodule:test:9]: at java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:157) So, class which generated by annotation processor is accessible from Main class(main class of mod) and isn't accessible from class from submodule. 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    • Depends on your needs. Why do you need the data on the client?
    • Looks like it works now, thanks  
    • Or PlayerLoggedIn is fine too?
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