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Game Crashing on RunClient - IllegalArgumentExcpetion

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I have been trying to figure this out for quite a while, and cannot figure it out. My game crashes on runClient(), with: java.lang.IllegalArgumentException: Missing scheme.
The error goes if I remove mods.toml and launch a plain forge client, but as soon as I add back mods.toml it crashes again. Full logs below, thanks in advance for any help!


[22:26:57] [main/INFO] [cp.mo.mo.Launcher/MODLAUNCHER]: ModLauncher running: args [--gameDir, ., --launchTarget, fmluserdevclient, --fml.mcpVersion, 20210115.111550, --fml.mcVersion, 1.16.5, --fml.forgeGroup, net.minecraftforge, --fml.forgeVersion, 36.1.16, --version, MOD_DEV, --assetIndex, 1.16, --assetsDir, C:\Users\John8\.gradle\caches\forge_gradle\assets, --username, Dev, --accessToken, ❄❄❄❄❄❄❄❄, --userProperties, {}]
[22:26:57] [main/INFO] [cp.mo.mo.Launcher/MODLAUNCHER]: ModLauncher 8.0.9+86+master.3cf110c starting: java version 1.8.0_275 by Amazon.com Inc.
[22:26:57] [main/DEBUG] [cp.mo.mo.LaunchServiceHandler/MODLAUNCHER]: Found launch services [minecraft,fmldevdata,fmldevclient,fmldevserver,fmluserdevserver,testharness,fmluserdevdata,fmlclient,fmluserdevclient,fmlserver]
[22:26:57] [main/DEBUG] [cp.mo.mo.NameMappingServiceHandler/MODLAUNCHER]: Found naming services : [srgtomcp]
[22:26:57] [main/DEBUG] [cp.mo.mo.LaunchPluginHandler/MODLAUNCHER]: Found launch plugins: [mixin,eventbus,object_holder_definalize,runtime_enum_extender,accesstransformer,capability_inject_definalize,runtimedistcleaner]
[22:26:57] [main/DEBUG] [cp.mo.mo.TransformationServicesHandler/MODLAUNCHER]: Discovering transformation services
[22:26:57] [main/DEBUG] [cp.mo.mo.TransformationServicesHandler/MODLAUNCHER]: Found additional transformation services from discovery services: []
[22:26:57] [main/DEBUG] [cp.mo.mo.TransformationServicesHandler/MODLAUNCHER]: Found transformer services : [mixin,fml]
[22:26:57] [main/DEBUG] [cp.mo.mo.TransformationServicesHandler/MODLAUNCHER]: Transformation services loading
[22:26:57] [main/DEBUG] [cp.mo.mo.TransformationServiceDecorator/MODLAUNCHER]: Loading service mixin
[22:26:57] [main/DEBUG] [cp.mo.mo.TransformationServiceDecorator/MODLAUNCHER]: Loaded service mixin
[22:26:57] [main/DEBUG] [cp.mo.mo.TransformationServiceDecorator/MODLAUNCHER]: Loading service fml
[22:26:57] [main/DEBUG] [ne.mi.fm.lo.FMLServiceProvider/]: Injecting tracing printstreams for STDOUT/STDERR.
[22:26:57] [main/DEBUG] [ne.mi.fm.lo.LauncherVersion/CORE]: Found FMLLauncher version 36.1
[22:26:57] [main/DEBUG] [ne.mi.fm.lo.FMLLoader/CORE]: FML 36.1 loading
[22:26:57] [main/DEBUG] [ne.mi.fm.lo.FMLLoader/CORE]: FML found ModLauncher version : 8.0.9+86+master.3cf110c
[22:26:57] [main/DEBUG] [ne.mi.fm.lo.FMLLoader/CORE]: Initializing modjar URL handler
[22:26:57] [main/DEBUG] [ne.mi.fm.lo.FMLLoader/CORE]: FML found AccessTransformer version : 3.0.1+61+master.47bca0e
[22:26:57] [main/DEBUG] [ne.mi.fm.lo.FMLLoader/CORE]: FML found EventBus version : 4.0.0+65+master.6080a3f
[22:26:57] [main/DEBUG] [ne.mi.fm.lo.FMLLoader/CORE]: Found Runtime Dist Cleaner
[22:26:57] [main/DEBUG] [ne.mi.fm.lo.FMLLoader/CORE]: FML found CoreMod version : 4.0.6+14+master.c21a551
[22:26:57] [main/DEBUG] [ne.mi.fm.lo.FMLLoader/CORE]: Found ForgeSPI package implementation version 3.2.0+13+master.8ddb2cc
[22:26:57] [main/DEBUG] [ne.mi.fm.lo.FMLLoader/CORE]: Found ForgeSPI package specification 3
[22:26:58] [main/INFO] [ne.mi.fm.lo.FixSSL/CORE]: Added Lets Encrypt root certificates as additional trust
[22:26:58] [main/DEBUG] [cp.mo.mo.TransformationServiceDecorator/MODLAUNCHER]: Loaded service fml
[22:26:58] [main/DEBUG] [cp.mo.mo.TransformationServicesHandler/MODLAUNCHER]: Configuring option handling for services
[22:26:58] [main/DEBUG] [cp.mo.mo.TransformationServicesHandler/MODLAUNCHER]: Transformation services initializing
[22:26:58] [main/DEBUG] [cp.mo.mo.TransformationServiceDecorator/MODLAUNCHER]: Initializing transformation service mixin
[22:26:58] [main/DEBUG] [mixin/]: Mixin bootstrap service org.spongepowered.asm.service.mojang.MixinServiceLaunchWrapperBootstrap is not available: LaunchWrapper is not available
[22:26:58] [main/DEBUG] [mixin/]: MixinService [ModLauncher] was successfully booted in sun.misc.Launcher$AppClassLoader@18b4aac2
[22:26:58] [main/INFO] [mixin/]: SpongePowered MIXIN Subsystem Version=0.8.2 Source=file:/C:/Users/John8/.gradle/caches/modules-2/files-2.1/org.spongepowered/mixin/0.8.2/1cf212283d26f706fd3074318870bebd14d2a9ed/mixin-0.8.2.jar Service=ModLauncher Env=CLIENT
[22:26:58] [main/DEBUG] [mixin/]: Initialising Mixin Platform Manager
[22:26:58] [main/DEBUG] [mixin/]: Adding mixin platform agents for container ModLauncher Root Container(4f56a0a2)
[22:26:58] [main/DEBUG] [mixin/]: Instancing new MixinPlatformAgentMinecraftForge for ModLauncher Root Container(4f56a0a2)
[22:26:58] [main/DEBUG] [mixin/]: MixinPlatformAgentMinecraftForge rejected container ModLauncher Root Container(4f56a0a2)
[22:26:58] [main/DEBUG] [mixin/]: Instancing new MixinPlatformAgentDefault for ModLauncher Root Container(4f56a0a2)
[22:26:58] [main/DEBUG] [mixin/]: MixinPlatformAgentDefault accepted container ModLauncher Root Container(4f56a0a2)
[22:26:58] [main/DEBUG] [cp.mo.mo.TransformationServiceDecorator/MODLAUNCHER]: Initialized transformation service mixin
[22:26:58] [main/DEBUG] [cp.mo.mo.TransformationServiceDecorator/MODLAUNCHER]: Initializing transformation service fml
[22:26:58] [main/DEBUG] [ne.mi.fm.lo.FMLServiceProvider/CORE]: Setting up basic FML game directories
[22:26:58] [main/DEBUG] [ne.mi.fm.lo.FileUtils/CORE]: Found existing GAMEDIR directory : C:\Users\John8\!javaprojects\WayMoreItems\run
[22:26:58] [main/DEBUG] [ne.mi.fm.lo.FMLPaths/CORE]: Path GAMEDIR is C:\Users\John8\!javaprojects\WayMoreItems\run
[22:26:58] [main/DEBUG] [ne.mi.fm.lo.FileUtils/CORE]: Found existing MODSDIR directory : C:\Users\John8\!javaprojects\WayMoreItems\run\mods
[22:26:58] [main/DEBUG] [ne.mi.fm.lo.FMLPaths/CORE]: Path MODSDIR is C:\Users\John8\!javaprojects\WayMoreItems\run\mods
[22:26:58] [main/DEBUG] [ne.mi.fm.lo.FileUtils/CORE]: Found existing CONFIGDIR directory : C:\Users\John8\!javaprojects\WayMoreItems\run\config
[22:26:58] [main/DEBUG] [ne.mi.fm.lo.FMLPaths/CORE]: Path CONFIGDIR is C:\Users\John8\!javaprojects\WayMoreItems\run\config
[22:26:58] [main/DEBUG] [ne.mi.fm.lo.FMLPaths/CORE]: Path FMLCONFIG is C:\Users\John8\!javaprojects\WayMoreItems\run\config\fml.toml
[22:26:58] [main/DEBUG] [ne.mi.fm.lo.FMLServiceProvider/CORE]: Loading configuration
[22:26:58] [main/DEBUG] [ne.mi.fm.lo.FileUtils/CORE]: Found existing default config directory directory : C:\Users\John8\!javaprojects\WayMoreItems\run\defaultconfigs
[22:26:58] [main/DEBUG] [ne.mi.fm.lo.FMLServiceProvider/CORE]: Preparing ModFile
[22:26:58] [main/DEBUG] [ne.mi.fm.lo.FMLServiceProvider/CORE]: Preparing launch handler
[22:26:58] [main/DEBUG] [ne.mi.fm.lo.FMLLoader/CORE]: Using fmluserdevclient as launch service
[22:26:59] [main/DEBUG] [ne.mi.fm.lo.FMLLoader/CORE]: Received command line version data  : MC Version: '1.16.5' MCP Version: '20210115.111550' Forge Version: '36.1.16' Forge group: 'net.minecraftforge'
[22:26:59] [main/DEBUG] [ne.mi.fm.lo.LibraryFinder/CORE]: Found JAR forge at path C:\Users\John8\.gradle\caches\forge_gradle\minecraft_user_repo\net\minecraftforge\forge\1.16.5-36.1.16_mapped_snapshot_20210309-1.16.5\forge-1.16.5-36.1.16_mapped_snapshot_20210309-1.16.5-recomp.jar
[22:26:59] [main/DEBUG] [ne.mi.fm.lo.LibraryFinder/CORE]: Found JAR mcdata at path C:\Users\John8\.gradle\caches\forge_gradle\minecraft_repo\versions\1.16.5\client-extra.jar
[22:26:59] [main/DEBUG] [ne.mi.us.FMLUserdevLaunchProvider/CORE]: Injecting maven path C:\Users\John8\.gradle\caches\forge_gradle\minecraft_user_repo
[22:26:59] [main/DEBUG] [ne.mi.fm.lo.FMLCommonLaunchHandler/CORE]: Got mod coordinates waymoreitems%%C:/Users/John8/!javaprojects/WayMoreItems\build\resources\main;waymoreitems%%C:/Users/John8/!javaprojects/WayMoreItems\build\classes\java\main from env
[22:26:59] [main/DEBUG] [ne.mi.fm.lo.FMLCommonLaunchHandler/CORE]: Found supplied mod coordinates [{waymoreitems=[C:\Users\John8\!javaprojects\WayMoreItems\build\resources\main, C:\Users\John8\!javaprojects\WayMoreItems\build\classes\java\main]}]
[22:26:59] [main/DEBUG] [ne.mi.fm.lo.LanguageLoadingProvider/CORE]: Found 2 language providers
[22:26:59] [main/DEBUG] [ne.mi.fm.lo.LanguageLoadingProvider/CORE]: Found language provider javafml, version 36.1
[22:26:59] [main/DEBUG] [ne.mi.fm.lo.LanguageLoadingProvider/CORE]: Found language provider minecraft, version 1
[22:26:59] [main/DEBUG] [ne.mi.fm.lo.LanguageLoadingProvider/CORE]: Skipping adding forge jar - javafml is already present
[22:26:59] [main/DEBUG] [cp.mo.mo.TransformationServiceDecorator/MODLAUNCHER]: Initialized transformation service fml
[22:26:59] [main/DEBUG] [cp.mo.mo.NameMappingServiceHandler/MODLAUNCHER]: Current naming domain is 'mcp'
[22:26:59] [main/DEBUG] [cp.mo.mo.NameMappingServiceHandler/MODLAUNCHER]: Identified name mapping providers {srg=srgtomcp:1234}
[22:26:59] [main/DEBUG] [cp.mo.mo.TransformationServicesHandler/MODLAUNCHER]: Transformation services begin scanning
[22:26:59] [main/DEBUG] [cp.mo.mo.TransformationServiceDecorator/MODLAUNCHER]: Beginning scan trigger - transformation service mixin
[22:26:59] [main/DEBUG] [cp.mo.mo.TransformationServiceDecorator/MODLAUNCHER]: End scan trigger - transformation service mixin
[22:26:59] [main/DEBUG] [cp.mo.mo.TransformationServiceDecorator/MODLAUNCHER]: Beginning scan trigger - transformation service fml
[22:26:59] [main/DEBUG] [ne.mi.fm.lo.FMLServiceProvider/CORE]: Initiating mod scan
[22:26:59] [main/DEBUG] [ne.mi.fm.lo.FMLLoader/SCAN]: Scanning for Mod Locators
Exception in thread "main" [22:26:59] [main/INFO] [STDERR/]: [java.lang.ThreadGroup:uncaughtException:1052]: java.lang.IllegalArgumentException: Missing scheme
[22:26:59] [main/INFO] [STDERR/]: [java.lang.ThreadGroup:uncaughtException:1052]: 	at java.nio.file.Paths.get(Paths.java:134)
[22:26:59] [main/INFO] [STDERR/]: [java.lang.ThreadGroup:uncaughtException:1052]: 	at net.minecraftforge.fml.loading.LibraryFinder.findJarPathFor(LibraryFinder.java:58)
[22:26:59] [main/INFO] [STDERR/]: [java.lang.ThreadGroup:uncaughtException:1052]: 	at net.minecraftforge.userdev.ClasspathLocator.locateMods(ClasspathLocator.java:81)
[22:26:59] [main/INFO] [STDERR/]: [java.lang.ThreadGroup:uncaughtException:1052]: 	at net.minecraftforge.userdev.ClasspathLocator.initArguments(ClasspathLocator.java:69)
[22:26:59] [main/INFO] [STDERR/]: [java.lang.ThreadGroup:uncaughtException:1052]: 	at net.minecraftforge.fml.loading.moddiscovery.ModDiscoverer.lambda$new$7(ModDiscoverer.java:92)
[22:26:59] [main/INFO] [STDERR/]: [java.lang.ThreadGroup:uncaughtException:1052]: 	at java.util.ArrayList.forEach(ArrayList.java:1259)
[22:26:59] [main/INFO] [STDERR/]: [java.lang.ThreadGroup:uncaughtException:1052]: 	at net.minecraftforge.fml.loading.moddiscovery.ModDiscoverer.<init>(ModDiscoverer.java:92)
[22:26:59] [main/INFO] [STDERR/]: [java.lang.ThreadGroup:uncaughtException:1052]: 	at net.minecraftforge.fml.loading.FMLLoader.beginModScan(FMLLoader.java:215)
[22:26:59] [main/INFO] [STDERR/]: [java.lang.ThreadGroup:uncaughtException:1052]: 	at net.minecraftforge.fml.loading.FMLServiceProvider.runScan(FMLServiceProvider.java:107)
[22:26:59] [main/INFO] [STDERR/]: [java.lang.ThreadGroup:uncaughtException:1052]: 	at cpw.mods.modlauncher.TransformationServiceDecorator.runScan(TransformationServiceDecorator.java:114)
[22:26:59] [main/INFO] [STDERR/]: [java.lang.ThreadGroup:uncaughtException:1052]: 	at cpw.mods.modlauncher.TransformationServicesHandler.lambda$runScanningTransformationServices$8(TransformationServicesHandler.java:115)
[22:26:59] [main/INFO] [STDERR/]: [java.lang.ThreadGroup:uncaughtException:1052]: 	at java.util.stream.ReferencePipeline$7$1.accept(ReferencePipeline.java:269)
[22:26:59] [main/INFO] [STDERR/]: [java.lang.ThreadGroup:uncaughtException:1052]: 	at java.util.HashMap$ValueSpliterator.forEachRemaining(HashMap.java:1628)
[22:26:59] [main/INFO] [STDERR/]: [java.lang.ThreadGroup:uncaughtException:1052]: 	at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:482)
[22:26:59] [main/INFO] [STDERR/]: [java.lang.ThreadGroup:uncaughtException:1052]: 	at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:472)
[22:26:59] [main/INFO] [STDERR/]: [java.lang.ThreadGroup:uncaughtException:1052]: 	at java.util.stream.ReduceOps$ReduceOp.evaluateSequential(ReduceOps.java:708)
[22:26:59] [main/INFO] [STDERR/]: [java.lang.ThreadGroup:uncaughtException:1052]: 	at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)
[22:26:59] [main/INFO] [STDERR/]: [java.lang.ThreadGroup:uncaughtException:1052]: 	at java.util.stream.ReferencePipeline.collect(ReferencePipeline.java:566)
[22:26:59] [main/INFO] [STDERR/]: [java.lang.ThreadGroup:uncaughtException:1052]: 	at cpw.mods.modlauncher.TransformationServicesHandler.runScanningTransformationServices(TransformationServicesHandler.java:116)
[22:26:59] [main/INFO] [STDERR/]: [java.lang.ThreadGroup:uncaughtException:1052]: 	at cpw.mods.modlauncher.TransformationServicesHandler.initializeTransformationServices(TransformationServicesHandler.java:63)
[22:26:59] [main/INFO] [STDERR/]: [java.lang.ThreadGroup:uncaughtException:1052]: 	at cpw.mods.modlauncher.Launcher.run(Launcher.java:76)
[22:26:59] [main/INFO] [STDERR/]: [java.lang.ThreadGroup:uncaughtException:1052]: 	at cpw.mods.modlauncher.Launcher.main(Launcher.java:66)
[22:26:59] [main/INFO] [STDERR/]: [java.lang.ThreadGroup:uncaughtException:1052]: 	at net.minecraftforge.userdev.LaunchTesting.main(LaunchTesting.java:105)


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Provide your mods.toml please, it looks like you're missing a prefix on a URI

This is my Forum Signature, I am currently attempting to transform it into a small guide for fixing easier issues using spoiler blocks to keep things tidy.


As the most common issue I feel I should put this outside the main bulk:

The only official source for Forge is https://files.minecraftforge.net, and the only site I trust for getting mods is CurseForge.

If you use any site other than these, please take a look at the StopModReposts project and install their browser extension, I would also advise running a virus scan.


For players asking for assistance with Forge please expand the spoiler below and read the appropriate section(s) in its/their entirety.


Logs (Most issues require logs to diagnose):


Please post logs using one of the following sites (Thank you Lumber Wizard for the list):

https://gist.github.com/100MB Requires member (Free)

https://pastebin.com/: 512KB as guest, 10MB as Pro ($$$)

https://hastebin.com/: 400KB

Do NOT use sites like Mediafire, Dropbox, OneDrive, Google Drive, or a site that has a countdown before offering downloads.


What to provide:

...for Crashes and Runtime issues:

Minecraft 1.14.4 and newer:

Post debug.log

Older versions:

Please update...


...for Installer Issues:

Post your installer log, found in the same place you ran the installer

This log will be called either installer.log or named the same as the installer but with .log on the end

Note for Windows users:

Windows hides file extensions by default so the installer may appear without the .jar extension then when the .log is added the log will appear with the .jar extension


Where to get it:

Mojang Launcher: When using the Mojang launcher debug.log is found in .minecraft\logs.


Curse/Overwolf: If you are using the Curse Launcher, their configurations break Forge's log settings, fortunately there is an easier workaround than I originally thought, this works even with Curse's installation of the Minecraft launcher as long as it is not launched THROUGH Twitch:

  1. Make sure you have the correct version of Forge installed (some packs are heavily dependent on one specific build of Forge)
  2. Make a launcher profile targeting this version of Forge.
  3. Set the launcher profile's GameDir property to the pack's instance folder (not the instances folder, the folder that has the pack's name on it).
  4. Now launch the pack through that profile and follow the "Mojang Launcher" instructions above.






or alternately, 


Fallback ("No logs are generated"):

If you don't see logs generated in the usual place, provide the launcher_log.txt from .minecraft


Server Not Starting:


If your server does not start or a command window appears and immediately goes away, run the jar manually and provide the output.


Reporting Illegal/Inappropriate Adfocus Ads:


Get a screenshot of the URL bar or copy/paste the whole URL into a thread on the General Discussion board with a description of the Ad.

Lex will need the Ad ID contained in that URL to report it to Adfocus' support team.


Posting your mod as a GitHub Repo:


When you have an issue with your mod the most helpful thing you can do when asking for help is to provide your code to those helping you. The most convenient way to do this is via GitHub or another source control hub.

When setting up a GitHub Repo it might seem easy to just upload everything, however this method has the potential for mistakes that could lead to trouble later on, it is recommended to use a Git client or to get comfortable with the Git command line. The following instructions will use the Git Command Line and as such they assume you already have it installed and that you have created a repository.


  1. Open a command prompt (CMD, Powershell, Terminal, etc).
  2. Navigate to the folder you extracted Forge’s MDK to (the one that had all the licenses in).
  3. Run the following commands:
    1. git init
    2. git remote add origin [Your Repository's URL]
      • In the case of GitHub it should look like: https://GitHub.com/[Your Username]/[Repo Name].git
    3. git fetch
    4. git checkout --track origin/master
    5. git stage *
    6. git commit -m "[Your commit message]"
    7. git push
  4. Navigate to GitHub and you should now see most of the files.
    • note that it is intentional that some are not synced with GitHub and this is done with the (hidden) .gitignore file that Forge’s MDK has provided (hence the strictness on which folder git init is run from)
  5. Now you can share your GitHub link with those who you are asking for help.

[Workaround line, please ignore]


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I used the default mods.toml that comes with the mdk. Here - 



 # This is an example mods.toml file. It contains the data relating to the loading mods.
# There are several mandatory fields (#mandatory), and many more that are optional (#optional).
# The overall format is standard TOML format, v0.5.0.
# Note that there are a couple of TOML lists in this file.
# Find more information on toml format here: https://github.com/toml-lang/toml
# The name of the mod loader type to load - for regular FML @Mod mods it should be javafml
modLoader="javafml" #mandatory
# A version range to match for said mod loader - for regular FML @Mod it will be the forge version
loaderVersion="[36,)" #mandatory This is typically bumped every Minecraft version by Forge. See our download page for lists of versions.
# The license for you mod. This is mandatory metadata and allows for easier comprehension of your redistributive properties.
# Review your options at https://choosealicense.com/. All rights reserved is the default copyright stance, and is thus the default here.
license="All rights reserved"
# A URL to refer people to when problems occur with this mod
#issueTrackerURL="https://change.me.to.your.issue.tracker.example.invalid/" #optional
# A list of mods - how many allowed here is determined by the individual mod loader
[[mods]] #mandatory
# The modid of the mod
modId="waymoreitems" #mandatory
# The version number of the mod - there's a few well known ${} variables useable here or just hardcode it
# ${file.jarVersion} will substitute the value of the Implementation-Version as read from the mod's JAR file metadata
# see the associated build.gradle script for how to populate this completely automatically during a build
version="${file.jarVersion}" #mandatory
# A display name for the mod
displayName="WayMoreItems" #mandatory
# A URL to query for updates for this mod. See the JSON update specification https://mcforge.readthedocs.io/en/latest/gettingstarted/autoupdate/
#updateJSONURL="https://change.me.example.invalid/updates.json" #optional
# A URL for the "homepage" for this mod, displayed in the mod UI
#displayURL="https://change.me.to.your.mods.homepage.example.invalid/" #optional
# A file name (in the root of the mod JAR) containing a logo for display
#logoFile="" #optional
# A text field displayed in the mod UI
#credits="Thanks for this example mod goes to Java" #optional
# A text field displayed in the mod UI
authors="Obesephoenix" #optional
# The description text for the mod (multi line!) (#mandatory)
A mod that adds way more items!
# A dependency - use the . to indicate dependency for a specific modid. Dependencies are optional.
[[dependencies.waymoreitems]] #optional
# the modid of the dependency
modId="forge" #mandatory
# Does this dependency have to exist - if not, ordering below must be specified
mandatory=true #mandatory
# The version range of the dependency
versionRange="[36,)" #mandatory
# An ordering relationship for the dependency - BEFORE or AFTER required if the relationship is not mandatory
# Side this dependency is applied on - BOTH, CLIENT or SERVER
# Here's another dependency
# This version range declares a minimum of the current minecraft version up to but not including the next major version


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    • Java 16 is not yet supported.
    • It is about the Java version. You cannot use Java 16. 
    • C:\Users\rauno\OneDrive\Töölaud\Uus kaust>java -Xmx2048M -Xms2048M -jar forgeserver.jar nogui 2021-06-21 10:09:17,374 main WARN Advanced terminal features are not available in this environment [10:09:17] [main/INFO] [cp.mo.mo.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, nogui] [10:09:17] [main/INFO] [cp.mo.mo.Launcher/MODLAUNCHER]: ModLauncher 8.0.9+86+master.3cf110c starting: java version 16.0.1 by Oracle Corporation Exception in thread "main" java.lang.IllegalAccessError: class cpw.mods.modlauncher.SecureJarHandler (in unnamed module @0x29f69090) cannot access class sun.security.util.ManifestEntryVerifier (in module java.base) because module java.base does not export sun.security.util to unnamed module @0x29f69090         at cpw.mods.modlauncher.SecureJarHandler.lambda$static$1(SecureJarHandler.java:41)         at cpw.mods.modlauncher.api.LamdbaExceptionUtils.uncheck(LamdbaExceptionUtils.java:95)         at cpw.mods.modlauncher.SecureJarHandler.<clinit>(SecureJarHandler.java:41)         at cpw.mods.modlauncher.Launcher.lambda$new$6(Launcher.java:55)         at java.base/java.util.concurrent.ConcurrentHashMap.computeIfAbsent(ConcurrentHashMap.java:1708)         at cpw.mods.modlauncher.api.TypesafeMap.computeIfAbsent(TypesafeMap.java:52)         at cpw.mods.modlauncher.api.TypesafeMap.computeIfAbsent(TypesafeMap.java:47)         at cpw.mods.modlauncher.Environment.computePropertyIfAbsent(Environment.java:62)         at cpw.mods.modlauncher.Launcher.<init>(Launcher.java:55)         at cpw.mods.modlauncher.Launcher.main(Launcher.java:66)         at net.minecraftforge.server.ServerMain$Runner.runLauncher(ServerMain.java:63)         at net.minecraftforge.server.ServerMain$Runner.access$100(ServerMain.java:60)         at net.minecraftforge.server.ServerMain.main(ServerMain.java:57) C:\Users\rauno\OneDrive\Töölaud\Uus kaust>PAUSE is it saying for me when i am first opening it 
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