Error in dev only

[X-Lomir]

If I try to run Minecraft client from the dev environment, after generating the runs with gradlew genVSCodeRuns, I keep getting the following error:

Exception in thread "main" java.lang.StringIndexOutOfBoundsException: begin 0, end -4, length 0

However the mod runs without problems if I put the jar in a modpack.

My repo can be found here, I'm linking the whole repo because I don't know precisely what can be helpful to know for this error.

I will also put below the debug log.

[22ago2022 13:05:39.824] [main/INFO] [cpw.mods.modlauncher.Launcher/MODLAUNCHER]: ModLauncher running: args [--launchTarget, forgeclientuserdev, --version, MOD_DEV, --assetIndex, 1.18, --assetsDir, C:\Users\ricca\.gradle\caches\forge_gradle\assets, --gameDir, ., --fml.forgeVersion, 40.1.0, --fml.mcVersion, 1.18.2, --fml.forgeGroup, net.minecraftforge, --fml.mcpVersion, 20220404.173914, --mixin.config, soulfired.mixins.json]
[22ago2022 13:05:39.829] [main/INFO] [cpw.mods.modlauncher.Launcher/MODLAUNCHER]: ModLauncher 9.1.3+9.1.3+main.9b69c82a starting: java version 17.0.3 by Eclipse Adoptium
[22ago2022 13:05:39.850] [main/DEBUG] [cpw.mods.modlauncher.LaunchServiceHandler/MODLAUNCHER]: Found launch services [fmlclientdev,forgeclient,minecraft,forgegametestserverdev,fmlserveruserdev,fmlclient,fmldatauserdev,forgeserverdev,forgeserveruserdev,forgeclientdev,forgeclientuserdev,forgeserver,forgedatadev,fmlserver,fmlclientuserdev,fmlserverdev,forgedatauserdev,testharness,forgegametestserveruserdev]
[22ago2022 13:05:39.867] [main/DEBUG] [cpw.mods.modlauncher.NameMappingServiceHandler/MODLAUNCHER]: Found naming services : [srgtomcp]
[22ago2022 13:05:39.877] [main/DEBUG] [cpw.mods.modlauncher.LaunchPluginHandler/MODLAUNCHER]: Found launch plugins: [mixin,eventbus,slf4jfixer,object_holder_definalize,runtime_enum_extender,capability_token_subclass,accesstransformer,runtimedistcleaner]
[22ago2022 13:05:39.886] [main/DEBUG] [cpw.mods.modlauncher.TransformationServicesHandler/MODLAUNCHER]: Discovering transformation services
[22ago2022 13:05:39.893] [main/DEBUG] [cpw.mods.modlauncher.TransformationServicesHandler/MODLAUNCHER]: Found additional transformation services from discovery services: java.util.stream.ReferencePipeline$3@591e58fa
[22ago2022 13:05:39.906] [main/DEBUG] [cpw.mods.modlauncher.TransformationServicesHandler/MODLAUNCHER]: Found transformer services : [mixin,fml]
[22ago2022 13:05:39.906] [main/DEBUG] [cpw.mods.modlauncher.TransformationServicesHandler/MODLAUNCHER]: Transformation services loading
[22ago2022 13:05:39.907] [main/DEBUG] [cpw.mods.modlauncher.TransformationServiceDecorator/MODLAUNCHER]: Loading service mixin
[22ago2022 13:05:39.908] [main/DEBUG] [cpw.mods.modlauncher.TransformationServiceDecorator/MODLAUNCHER]: Loaded service mixin
[22ago2022 13:05:39.909] [main/DEBUG] [cpw.mods.modlauncher.TransformationServiceDecorator/MODLAUNCHER]: Loading service fml
[22ago2022 13:05:39.912] [main/DEBUG] [net.minecraftforge.fml.loading.LauncherVersion/CORE]: Found FMLLauncher version 1.0
[22ago2022 13:05:39.912] [main/DEBUG] [net.minecraftforge.fml.loading.FMLLoader/CORE]: FML 1.0 loading
[22ago2022 13:05:39.913] [main/DEBUG] [net.minecraftforge.fml.loading.FMLLoader/CORE]: FML found ModLauncher version : 9.1.3+9.1.3+main.9b69c82a
[22ago2022 13:05:39.914] [main/DEBUG] [net.minecraftforge.fml.loading.FMLLoader/CORE]: FML found AccessTransformer version : 8.0.4+66+master.c09db6d7
[22ago2022 13:05:39.915] [main/DEBUG] [net.minecraftforge.fml.loading.FMLLoader/CORE]: FML found EventBus version : 5.0.7+5.0.7+master.6d3407cc
[22ago2022 13:05:39.915] [main/DEBUG] [net.minecraftforge.fml.loading.FMLLoader/CORE]: Found Runtime Dist Cleaner
[22ago2022 13:05:39.917] [main/DEBUG] [net.minecraftforge.fml.loading.FMLLoader/CORE]: FML found CoreMod version : 5.0.2+5.0.2+master.303343f8
[22ago2022 13:05:39.918] [main/DEBUG] [net.minecraftforge.fml.loading.FMLLoader/CORE]: Found ForgeSPI package implementation version 4.0.15-4.x+4.0.15-4.x+4.x.038e91c0
[22ago2022 13:05:39.919] [main/DEBUG] [net.minecraftforge.fml.loading.FMLLoader/CORE]: Found ForgeSPI package specification 4
[22ago2022 13:05:39.921] [main/DEBUG] [cpw.mods.modlauncher.TransformationServiceDecorator/MODLAUNCHER]: Loaded service fml
[22ago2022 13:05:39.923] [main/DEBUG] [cpw.mods.modlauncher.TransformationServicesHandler/MODLAUNCHER]: Configuring option handling for services
[22ago2022 13:05:39.929] [main/DEBUG] [cpw.mods.modlauncher.TransformationServicesHandler/MODLAUNCHER]: Transformation services initializing
[22ago2022 13:05:39.930] [main/DEBUG] [cpw.mods.modlauncher.TransformationServiceDecorator/MODLAUNCHER]: Initializing transformation service mixin
[22ago2022 13:05:39.953] [main/DEBUG] [mixin/]: MixinService [ModLauncher] was successfully booted in cpw.mods.cl.ModuleClassLoader@7e07db1f
[22ago2022 13:05:39.970] [main/INFO] [mixin/]: SpongePowered MIXIN Subsystem Version=0.8.5 Source=union:/C:/Users/ricca/.gradle/caches/modules-2/files-2.1/org.spongepowered/mixin/0.8.5/9d1c0c3a304ae6697ecd477218fa61b850bf57fc/mixin-0.8.5.jar%2322!/ Service=ModLauncher Env=CLIENT
[22ago2022 13:05:39.975] [main/DEBUG] [mixin/]: Initialising Mixin Platform Manager
[22ago2022 13:05:39.976] [main/DEBUG] [mixin/]: Adding mixin platform agents for container ModLauncher Root Container(ModLauncher:4f56a0a2)
[22ago2022 13:05:39.977] [main/DEBUG] [mixin/]: Instancing new MixinPlatformAgentMinecraftForge for ModLauncher Root Container(ModLauncher:4f56a0a2)
[22ago2022 13:05:39.978] [main/DEBUG] [mixin/]: MixinPlatformAgentMinecraftForge rejected container ModLauncher Root Container(ModLauncher:4f56a0a2)
[22ago2022 13:05:39.979] [main/DEBUG] [mixin/]: Instancing new MixinPlatformAgentDefault for ModLauncher Root Container(ModLauncher:4f56a0a2)
[22ago2022 13:05:39.979] [main/DEBUG] [mixin/]: MixinPlatformAgentDefault accepted container ModLauncher Root Container(ModLauncher:4f56a0a2)
[22ago2022 13:05:39.981] [main/DEBUG] [cpw.mods.modlauncher.TransformationServiceDecorator/MODLAUNCHER]: Initialized transformation service mixin
[22ago2022 13:05:39.981] [main/DEBUG] [cpw.mods.modlauncher.TransformationServiceDecorator/MODLAUNCHER]: Initializing transformation service fml
[22ago2022 13:05:39.982] [main/DEBUG] [net.minecraftforge.fml.loading.FMLServiceProvider/CORE]: Setting up basic FML game directories
[22ago2022 13:05:39.983] [main/DEBUG] [net.minecraftforge.fml.loading.FileUtils/CORE]: Found existing GAMEDIR directory : C:\Users\ricca\Desktop\mods\1.18\.2\soul-fire-d\forge\run
[22ago2022 13:05:39.984] [main/DEBUG] [net.minecraftforge.fml.loading.FMLPaths/CORE]: Path GAMEDIR is C:\Users\ricca\Desktop\mods\1.18\.2\soul-fire-d\forge\run
[22ago2022 13:05:39.984] [main/DEBUG] [net.minecraftforge.fml.loading.FileUtils/CORE]: Found existing MODSDIR directory : C:\Users\ricca\Desktop\mods\1.18\.2\soul-fire-d\forge\run\mods
[22ago2022 13:05:39.984] [main/DEBUG] [net.minecraftforge.fml.loading.FMLPaths/CORE]: Path MODSDIR is C:\Users\ricca\Desktop\mods\1.18\.2\soul-fire-d\forge\run\mods
[22ago2022 13:05:39.985] [main/DEBUG] [net.minecraftforge.fml.loading.FileUtils/CORE]: Found existing CONFIGDIR directory : C:\Users\ricca\Desktop\mods\1.18\.2\soul-fire-d\forge\run\config
[22ago2022 13:05:39.985] [main/DEBUG] [net.minecraftforge.fml.loading.FMLPaths/CORE]: Path CONFIGDIR is C:\Users\ricca\Desktop\mods\1.18\.2\soul-fire-d\forge\run\config
[22ago2022 13:05:39.985] [main/DEBUG] [net.minecraftforge.fml.loading.FMLPaths/CORE]: Path FMLCONFIG is C:\Users\ricca\Desktop\mods\1.18\.2\soul-fire-d\forge\run\config\fml.toml
[22ago2022 13:05:39.985] [main/DEBUG] [net.minecraftforge.fml.loading.FMLServiceProvider/CORE]: Loading configuration
[22ago2022 13:05:40.027] [main/DEBUG] [net.minecraftforge.fml.loading.FileUtils/CORE]: Found existing default config directory directory : C:\Users\ricca\Desktop\mods\1.18\.2\soul-fire-d\forge\run\defaultconfigs
[22ago2022 13:05:40.028] [main/DEBUG] [net.minecraftforge.fml.loading.FMLServiceProvider/CORE]: Preparing ModFile
[22ago2022 13:05:40.031] [main/DEBUG] [net.minecraftforge.fml.loading.FMLServiceProvider/CORE]: Preparing launch handler
[22ago2022 13:05:40.032] [main/DEBUG] [net.minecraftforge.fml.loading.FMLLoader/CORE]: Using forgeclientuserdev as launch service
[22ago2022 13:05:40.052] [main/DEBUG] [net.minecraftforge.fml.loading.FMLLoader/CORE]: Received command line version data  : VersionInfo[forgeVersion=40.1.0, mcVersion=1.18.2, mcpVersion=20220404.173914, forgeGroup=net.minecraftforge]
[22ago2022 13:05:40.054] [main/DEBUG] [cpw.mods.modlauncher.TransformationServiceDecorator/MODLAUNCHER]: Initialized transformation service fml
[22ago2022 13:05:40.055] [main/DEBUG] [cpw.mods.modlauncher.NameMappingServiceHandler/MODLAUNCHER]: Current naming domain is 'mcp'
[22ago2022 13:05:40.057] [main/DEBUG] [cpw.mods.modlauncher.NameMappingServiceHandler/MODLAUNCHER]: Identified name mapping providers {srg=srgtomcp:1234}
[22ago2022 13:05:40.057] [main/DEBUG] [cpw.mods.modlauncher.TransformationServicesHandler/MODLAUNCHER]: Transformation services begin scanning
[22ago2022 13:05:40.059] [main/DEBUG] [cpw.mods.modlauncher.TransformationServiceDecorator/MODLAUNCHER]: Beginning scan trigger - transformation service mixin
[22ago2022 13:05:40.059] [main/DEBUG] [cpw.mods.modlauncher.TransformationServiceDecorator/MODLAUNCHER]: End scan trigger - transformation service mixin
[22ago2022 13:05:40.060] [main/DEBUG] [cpw.mods.modlauncher.TransformationServiceDecorator/MODLAUNCHER]: Beginning scan trigger - transformation service fml
[22ago2022 13:05:40.060] [main/DEBUG] [net.minecraftforge.fml.loading.FMLServiceProvider/CORE]: Initiating mod scan
[22ago2022 13:05:40.068] [main/DEBUG] [net.minecraftforge.fml.loading.moddiscovery.ModListHandler/CORE]: Found mod coordinates from lists: []
[22ago2022 13:05:40.070] [main/DEBUG] [net.minecraftforge.fml.loading.moddiscovery.ModDiscoverer/CORE]: Found Mod Locators : (mods folder:null),(maven libs:null),(exploded directory:null),(minecraft:null),(userdev classpath:null)
[22ago2022 13:05:40.076] [main/DEBUG] [net.minecraftforge.fml.loading.targets.CommonLaunchHandler/CORE]: Got mod coordinates  from env
[22ago2022 13:05:40.078] [main/DEBUG] [net.minecraftforge.fml.loading.targets.CommonLaunchHandler/CORE]: Found supplied mod coordinates [{defaultmodid=[]}]

 

[Luis_ST]

13 minutes ago, X-Lomir said:

I keep getting the following error:

There is no such error in the log you post, please post the log where you get this error.

[X-Lomir]

14 minutes ago, Luis_ST said:

There is no such error in the log you post, please post the log where you get this error.

I swear that is the log I got, I don't know why the error only appears in console and is not present in the debug log.

Anyway, I will put below also the stacktrace I copied from the console:

Exception in thread "main" java.lang.StringIndexOutOfBoundsException: begin 0, end -4, length 0
        at java.base/java.lang.String.checkBoundsBeginEnd(Unknown Source)
        at java.base/java.lang.String.substring(Unknown Source)
        at cpw.mods.securejarhandler@1.0.3/cpw.mods.jarhandling.JarMetadata.fromFileName(JarMetadata.java:79)
        at cpw.mods.securejarhandler@1.0.3/cpw.mods.jarhandling.JarMetadata.from(JarMetadata.java:44)
        at MC-BOOTSTRAP/fmlloader@1.18.2-40.1.0/net.minecraftforge.fml.loading.moddiscovery.AbstractModLocator.lambda$createMod$0(AbstractModLocator.java:36)
        at cpw.mods.securejarhandler@1.0.3/cpw.mods.jarhandling.impl.Jar.<init>(Jar.java:134)
        at cpw.mods.securejarhandler@1.0.3/cpw.mods.jarhandling.SecureJar.from(SecureJar.java:58)
        at MC-BOOTSTRAP/fmlloader@1.18.2-40.1.0/net.minecraftforge.fml.loading.moddiscovery.AbstractModLocator.createMod(AbstractModLocator.java:34)
        at MC-BOOTSTRAP/fmlloader@1.18.2-40.1.0/net.minecraftforge.fml.loading.moddiscovery.MinecraftLocator.lambda$scanMods$6(MinecraftLocator.java:39)
        at java.base/java.util.stream.ReferencePipeline$3$1.accept(Unknown Source)
        at java.base/java.util.AbstractList$RandomAccessSpliterator.forEachRemaining(Unknown Source)
        at java.base/java.util.stream.AbstractPipeline.copyInto(Unknown Source)
        at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(Unknown Source)
        at java.base/java.util.stream.AbstractPipeline.evaluate(Unknown Source)
        at java.base/java.util.stream.AbstractPipeline.evaluateToArrayNode(Unknown Source)
        at java.base/java.util.stream.ReferencePipeline.toArray(Unknown Source)
        at java.base/java.util.stream.ReferencePipeline.toArray(Unknown Source)
        at java.base/java.util.stream.ReferencePipeline.toList(Unknown Source)
        at MC-BOOTSTRAP/fmlloader@1.18.2-40.1.0/net.minecraftforge.fml.loading.moddiscovery.MinecraftLocator.scanMods(MinecraftLocator.java:41)
        at MC-BOOTSTRAP/fmlloader@1.18.2-40.1.0/net.minecraftforge.fml.loading.moddiscovery.ModDiscoverer.discoverMods(ModDiscoverer.java:50)
        at MC-BOOTSTRAP/fmlloader@1.18.2-40.1.0/net.minecraftforge.fml.loading.FMLLoader.beginModScan(FMLLoader.java:166)
        at MC-BOOTSTRAP/fmlloader@1.18.2-40.1.0/net.minecraftforge.fml.loading.FMLServiceProvider.beginScanning(FMLServiceProvider.java:86)
        at MC-BOOTSTRAP/cpw.mods.modlauncher@9.1.3/cpw.mods.modlauncher.TransformationServiceDecorator.runScan(TransformationServiceDecorator.java:112)
        at MC-BOOTSTRAP/cpw.mods.modlauncher@9.1.3/cpw.mods.modlauncher.TransformationServicesHandler.lambda$runScanningTransformationServices$8(TransformationServicesHandler.java:100) 
        at java.base/java.util.stream.ReferencePipeline$3$1.accept(Unknown Source)
        at java.base/java.util.HashMap$ValueSpliterator.forEachRemaining(Unknown Source)
        at java.base/java.util.stream.AbstractPipeline.copyInto(Unknown Source)
        at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(Unknown Source)
        at java.base/java.util.stream.AbstractPipeline.evaluate(Unknown Source)
        at java.base/java.util.stream.AbstractPipeline.evaluateToArrayNode(Unknown Source)
        at java.base/java.util.stream.ReferencePipeline.toArray(Unknown Source)
        at java.base/java.util.stream.ReferencePipeline.toArray(Unknown Source)
        at java.base/java.util.stream.ReferencePipeline.toList(Unknown Source)
        at MC-BOOTSTRAP/cpw.mods.modlauncher@9.1.3/cpw.mods.modlauncher.TransformationServicesHandler.runScanningTransformationServices(TransformationServicesHandler.java:102)
        at MC-BOOTSTRAP/cpw.mods.modlauncher@9.1.3/cpw.mods.modlauncher.TransformationServicesHandler.initializeTransformationServices(TransformationServicesHandler.java:55)
        at MC-BOOTSTRAP/cpw.mods.modlauncher@9.1.3/cpw.mods.modlauncher.Launcher.run(Launcher.java:87)
        at MC-BOOTSTRAP/cpw.mods.modlauncher@9.1.3/cpw.mods.modlauncher.Launcher.main(Launcher.java:77)
        at MC-BOOTSTRAP/cpw.mods.modlauncher@9.1.3/cpw.mods.modlauncher.BootstrapLaunchConsumer.accept(BootstrapLaunchConsumer.java:26)
        at MC-BOOTSTRAP/cpw.mods.modlauncher@9.1.3/cpw.mods.modlauncher.BootstrapLaunchConsumer.accept(BootstrapLaunchConsumer.java:23)
        at cpw.mods.bootstraplauncher@1.0.0/cpw.mods.bootstraplauncher.BootstrapLauncher.main(BootstrapLauncher.java:149)

 

[warjort]

I know what the problem is, but I don't know enough about ForgeGradle or vscode to tell you why it is happening.

 

Your launcher.json is getting generated with an empty MOD_CLASSES

      "env": {
        "MOD_CLASSES": "",
        "MCP_MAPPINGS": "official_1.18.2"
      }

When I generate the eclipse runs, I get the same problem

  <mapAttribute key="org.eclipse.debug.core.environmentVariables">
    <mapEntry key="MOD_CLASSES" value=""/>
    <mapEntry key="MCP_MAPPINGS" value="official_1.18.2"/>
  </mapAttribute>

However, the intellij runs work

    <envs>
      <env name="MOD_CLASSES" value="soulfired%%$PROJECT_DIR$\build\resources\main;soulfired%%$PROJECT_DIR$\build\classes\java\main"/>
      <env name="MCP_MAPPINGS" value="official_1.18.2"/>
    </envs>

 

I would suggest you report this a bug here: https://github.com/MinecraftForge/ForgeGradle/issues

 

When I fix that field manually to use the comparable setup as intellij, it works fine

"MOD_CLASSES": "${workspaceFolder}\\build\\resources\\main;${workspaceFolder}\\build\\classes\\java\\main",
        

 

Edited August 22, 2022 by warjort

[warjort]

P.S. You need to fix your build so that others can build without that api properties file.

I had to comment out a large part of your build.gradle to be able to reproduce this problem.

[X-Lomir]

22 minutes ago, warjort said:

P.S. You need to fix your build so that others can build without that api properties file.

I had to comment out a large part of your build.gradle to be able to reproduce this problem.

Yeah, that api properties file is where I store the api key for publishing on CurseForge and GitHub. I forgot to mention that either you have it or all the inherent part must be commented out (or create a mock file).

[X-Lomir]

26 minutes ago, warjort said:

I know what the problem is, but I don't know enough about ForgeGradle or vscode to tell you why it is happening.

 

Your launcher.json is getting generated with an empty MOD_CLASSES

      "env": {
        "MOD_CLASSES": "",
        "MCP_MAPPINGS": "official_1.18.2"
      }

When I generate the eclipse runs, I get the same problem

  <mapAttribute key="org.eclipse.debug.core.environmentVariables">
    <mapEntry key="MOD_CLASSES" value=""/>
    <mapEntry key="MCP_MAPPINGS" value="official_1.18.2"/>
  </mapAttribute>

However, the intellij runs work

    <envs>
      <env name="MOD_CLASSES" value="soulfired%%$PROJECT_DIR$\build\resources\main;soulfired%%$PROJECT_DIR$\build\classes\java\main"/>
      <env name="MCP_MAPPINGS" value="official_1.18.2"/>
    </envs>

 

I would suggest you report this a bug here: https://github.com/MinecraftForge/ForgeGradle/issues

 

When I fix that field manually to use the comparable setup as intellij, it works fine

"MOD_CLASSES": "${workspaceFolder}\\build\\resources\\main;${workspaceFolder}\\build\\classes\\java\\main",
        

 

Okay, adding the string you wrote works for me too, although I'm getting an error that says it can't find a mixin, but I guess this is another problem ahah

Thanks!