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Modded Server not launching


Tidod
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I have installed a forge server, and tried launching it. It launches as a vanilla server if I run the file called "minecraft_server.1.16.5.jar"

If i run the file called "forge-1.16.5-36.2.23.jar", nothing at all happens, it just creates a log with these 2 lines:

[19Jan2022 16:08:29.340] [main/INFO] [cpw.mods.modlauncher.Launcher/MODLAUNCHER]: ModLauncher running: args [--gameDir, ., --launchTarget, fmlserver, --fml.forgeVersion, 36.2.23, --fml.mcpVersion, 20210115.111550, --fml.mcVersion, 1.16.5, --fml.forgeGroup, net.minecraftforge]
[19Jan2022 16:08:29.345] [main/INFO] [cpw.mods.modlauncher.Launcher/MODLAUNCHER]: ModLauncher 8.0.9+86+master.3cf110c starting: java version 17.0.1 by Oracle Corporation

I have also tried running both files (since I don't know which one I'm supposed to use) using the command line like this:

java -Xmx6000M -Xms6000M -jar {serverName}.jar nogui
pause

If I run the the server file, i get a vanilla server as well. If i run the forge file, the log file looks the same as before, and I get this result in the terminal:

D:\MCS\VH>java -Xmx6000M -Xms6000M -jar forge-1.16.5-36.2.23.jar nogui
2022-01-19 16:16:32,476 main WARN Advanced terminal features are not available in this environment
[16:16:32] [main/INFO] [cp.mo.mo.Launcher/MODLAUNCHER]: ModLauncher running: args [--gameDir, ., --launchTarget, fmlserver, --fml.forgeVersion, 36.2.23, --fml.mcpVersion, 20210115.111550, --fml.mcVersion, 1.16.5, --fml.forgeGroup, net.minecraftforge, nogui]
[16:16:32] [main/INFO] [cp.mo.mo.Launcher/MODLAUNCHER]: ModLauncher 8.0.9+86+master.3cf110c starting: java version 17.0.1 by Oracle Corporation
Exception in thread "main" java.lang.IllegalAccessError: class cpw.mods.modlauncher.SecureJarHandler (in unnamed module @0xadd0edd) cannot access class sun.security.util.ManifestEntryVerifier (in module java.base) because module java.base does not export sun.security.util to unnamed module @0xadd0edd
        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)

D:\MCS\VH>pause
Press any key to continue . . .

I have also tried launching old servers that I had on SkyFactory 3 that worked fine before, but they have stopped working too. When I launch them I get this result:

Starting Sky Factory 3 Server...
A problem occurred running the Server launcher.java.lang.reflect.InvocationTargetException
        at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77)
        at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.base/java.lang.reflect.Method.invoke(Method.java:568)
        at net.minecraftforge.fml.relauncher.ServerLaunchWrapper.run(ServerLaunchWrapper.java:62)
        at net.minecraftforge.fml.relauncher.ServerLaunchWrapper.main(ServerLaunchWrapper.java:31)
Caused by: java.lang.ClassCastException: class jdk.internal.loader.ClassLoaders$AppClassLoader cannot be cast to class java.net.URLClassLoader (jdk.internal.loader.ClassLoaders$AppClassLoader and java.net.URLClassLoader are in module java.base of loader 'bootstrap')
        at net.minecraft.launchwrapper.Launch.<init>(Launch.java:34)
        at net.minecraft.launchwrapper.Launch.main(Launch.java:28)
        ... 6 more
Press any key to continue . . .

I assume this means that something has changed on my pc, causing forge servers not to run correctly, but I cannot imagine what that could be.

I hope this is enough information to be able to help

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I uninstalled Java 17, and installed java 8. I launch the server and now have a different error:

[19Jan2022 16:51:20.604] [main/INFO] [cpw.mods.modlauncher.Launcher/MODLAUNCHER]: ModLauncher running: args [--gameDir, ., --launchTarget, fmlserver, --fml.forgeVersion, 36.2.23, --fml.mcpVersion, 20210115.111550, --fml.mcVersion, 1.16.5, --fml.forgeGroup, net.minecraftforge, nogui]
[19Jan2022 16:51:20.608] [main/INFO] [cpw.mods.modlauncher.Launcher/MODLAUNCHER]: ModLauncher 8.0.9+86+master.3cf110c starting: java version 1.8.0_321 by Oracle Corporation
[19Jan2022 16:51:21.615] [main/INFO] [net.minecraftforge.fml.loading.FixSSL/CORE]: Added Lets Encrypt root certificates as additional trust
[19Jan2022 16:51:21.654] [main/INFO] [mixin/]: SpongePowered MIXIN Subsystem Version=0.8.4 Source=file:/D:/MCS/Vault%20Hunters/libraries/org/spongepowered/mixin/0.8.4/mixin-0.8.4.jar Service=ModLauncher Env=SERVER
[19Jan2022 16:51:23.376] [main/INFO] [STDERR/]: [org.antlr.v4.runtime.ConsoleErrorListener:syntaxError:38]: line 1:0 token recognition error at: '~'
[19Jan2022 16:51:24.498] [main/INFO] [STDERR/]: [java.lang.ThreadGroup:uncaughtException:-1]: java.lang.NoSuchMethodError: sun.security.util.ManifestEntryVerifier.<init>(Ljava/util/jar/Manifest;)V
[19Jan2022 16:51:24.499] [main/INFO] [STDERR/]: [java.lang.ThreadGroup:uncaughtException:-1]: 	at cpw.mods.modlauncher.SecureJarHandler.createCodeSource(SecureJarHandler.java:66)
[19Jan2022 16:51:24.499] [main/INFO] [STDERR/]: [java.lang.ThreadGroup:uncaughtException:-1]: 	at cpw.mods.modlauncher.TransformingClassLoader$DelegatedClassLoader.findClass(TransformingClassLoader.java:275)
[19Jan2022 16:51:24.499] [main/INFO] [STDERR/]: [java.lang.ThreadGroup:uncaughtException:-1]: 	at cpw.mods.modlauncher.TransformingClassLoader.loadClass(TransformingClassLoader.java:136)
[19Jan2022 16:51:24.499] [main/INFO] [STDERR/]: [java.lang.ThreadGroup:uncaughtException:-1]: 	at cpw.mods.modlauncher.TransformingClassLoader.loadClass(TransformingClassLoader.java:98)
[19Jan2022 16:51:24.499] [main/INFO] [STDERR/]: [java.lang.ThreadGroup:uncaughtException:-1]: 	at java.lang.ClassLoader.loadClass(Unknown Source)
[19Jan2022 16:51:24.500] [main/INFO] [STDERR/]: [java.lang.ThreadGroup:uncaughtException:-1]: 	at java.lang.Class.forName0(Native Method)
[19Jan2022 16:51:24.500] [main/INFO] [STDERR/]: [java.lang.ThreadGroup:uncaughtException:-1]: 	at java.lang.Class.forName(Unknown Source)
[19Jan2022 16:51:24.500] [main/INFO] [STDERR/]: [java.lang.ThreadGroup:uncaughtException:-1]: 	at org.spongepowered.asm.service.modlauncher.ModLauncherClassProvider.findClass(ModLauncherClassProvider.java:67)
[19Jan2022 16:51:24.500] [main/INFO] [STDERR/]: [java.lang.ThreadGroup:uncaughtException:-1]: 	at org.spongepowered.asm.launch.platform.MixinConnectorManager.loadConnectors(MixinConnectorManager.java:70)
[19Jan2022 16:51:24.501] [main/INFO] [STDERR/]: [java.lang.ThreadGroup:uncaughtException:-1]: 	at org.spongepowered.asm.launch.platform.MixinConnectorManager.inject(MixinConnectorManager.java:59)
[19Jan2022 16:51:24.502] [main/INFO] [STDERR/]: [java.lang.ThreadGroup:uncaughtException:-1]: 	at org.spongepowered.asm.launch.platform.MixinPlatformManager.inject(MixinPlatformManager.java:196)
[19Jan2022 16:51:24.502] [main/INFO] [STDERR/]: [java.lang.ThreadGroup:uncaughtException:-1]: 	at org.spongepowered.asm.launch.MixinBootstrap.inject(MixinBootstrap.java:202)
[19Jan2022 16:51:24.503] [main/INFO] [STDERR/]: [java.lang.ThreadGroup:uncaughtException:-1]: 	at org.spongepowered.asm.launch.MixinLaunchPluginLegacy.initializeLaunch(MixinLaunchPluginLegacy.java:201)
[19Jan2022 16:51:24.503] [main/INFO] [STDERR/]: [java.lang.ThreadGroup:uncaughtException:-1]: 	at org.spongepowered.asm.launch.MixinLaunchPluginLegacy.initializeLaunch(MixinLaunchPluginLegacy.java:195)
[19Jan2022 16:51:24.504] [main/INFO] [STDERR/]: [java.lang.ThreadGroup:uncaughtException:-1]: 	at cpw.mods.modlauncher.LaunchPluginHandler.lambda$announceLaunch$9(LaunchPluginHandler.java:97)
[19Jan2022 16:51:24.504] [main/INFO] [STDERR/]: [java.lang.ThreadGroup:uncaughtException:-1]: 	at java.util.HashMap.forEach(Unknown Source)
[19Jan2022 16:51:24.505] [main/INFO] [STDERR/]: [java.lang.ThreadGroup:uncaughtException:-1]: 	at cpw.mods.modlauncher.LaunchPluginHandler.announceLaunch(LaunchPluginHandler.java:97)
[19Jan2022 16:51:24.505] [main/INFO] [STDERR/]: [java.lang.ThreadGroup:uncaughtException:-1]: 	at cpw.mods.modlauncher.LaunchServiceHandler.launch(LaunchServiceHandler.java:52)
[19Jan2022 16:51:24.505] [main/INFO] [STDERR/]: [java.lang.ThreadGroup:uncaughtException:-1]: 	at cpw.mods.modlauncher.LaunchServiceHandler.launch(LaunchServiceHandler.java:72)
[19Jan2022 16:51:24.506] [main/INFO] [STDERR/]: [java.lang.ThreadGroup:uncaughtException:-1]: 	at cpw.mods.modlauncher.Launcher.run(Launcher.java:82)
[19Jan2022 16:51:24.506] [main/INFO] [STDERR/]: [java.lang.ThreadGroup:uncaughtException:-1]: 	at cpw.mods.modlauncher.Launcher.main(Launcher.java:66)
[19Jan2022 16:51:24.507] [main/INFO] [STDERR/]: [java.lang.ThreadGroup:uncaughtException:-1]: 	at net.minecraftforge.server.ServerMain$Runner.runLauncher(ServerMain.java:63)
[19Jan2022 16:51:24.509] [main/INFO] [STDERR/]: [java.lang.ThreadGroup:uncaughtException:-1]: 	at net.minecraftforge.server.ServerMain$Runner.access$100(ServerMain.java:60)
[19Jan2022 16:51:24.510] [main/INFO] [STDERR/]: [java.lang.ThreadGroup:uncaughtException:-1]: 	at net.minecraftforge.server.ServerMain.main(ServerMain.java:57)
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I have the same problem with my forge server but I dont know how to install java 8 321 or older (only java 17 working) because when I want to install an older version I need to sign in Oracle and that just for companys

if you need more informations to help, I'll do my best

thank you

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You can download builds of OpenJDK for free from Eclipse Adoptium or AdoptOpenJDK
NOTE: The AdoptOpenJDK site is not liable to be around much longer as they became Eclipse Adoptium, however there are still some older builds that were not carried over to the new site

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.

Spoiler

Logs (Most issues require logs to diagnose):

Spoiler

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:

Spoiler
  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.

Video:

Spoiler

 

 

 

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:

Spoiler

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:

Spoiler

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:

Spoiler

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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