Forge won't launch

[thegiantredpanda]

I'm trying to launch forge, but it doesn't work.

 

[16:39:23] [main/INFO]: Loading tweak class name net.minecraftforge.fml.common.launcher.FMLTweaker
[16:39:23] [main/INFO]: Using primary tweak class name net.minecraftforge.fml.common.launcher.FMLTweaker
[16:39:23] [main/INFO]: Calling tweak class net.minecraftforge.fml.common.launcher.FMLTweaker
[16:39:24] [main/INFO]: Forge Mod Loader version 14.23.5.2768 for Minecraft 1.12.2 loading
[16:39:24] [main/INFO]: Java is Java HotSpot(TM) 64-Bit Server VM, version 1.8.0_191, running on Windows 10:amd64:10.0, installed at C:\Program Files\Java\jre1.8.0_191
[16:39:24] [main/ERROR]: Unable to launch
java.lang.RuntimeException: An error occurred trying to configure the Minecraft home at C:\Users\basvt\AppData\Roaming\.pandalauncher\instances\onelife for Forge Mod Loader
    at net.minecraftforge.fml.relauncher.FMLLaunchHandler.setupHome(FMLLaunchHandler.java:111) ~[forge-1.12.2-14.23.5.2768.jar:?]
    at net.minecraftforge.fml.relauncher.FMLLaunchHandler.setupClient(FMLLaunchHandler.java:81) ~[forge-1.12.2-14.23.5.2768.jar:?]
    at net.minecraftforge.fml.relauncher.FMLLaunchHandler.configureForClientLaunch(FMLLaunchHandler.java:42) ~[forge-1.12.2-14.23.5.2768.jar:?]
    at net.minecraftforge.fml.common.launcher.FMLTweaker.injectIntoClassLoader(FMLTweaker.java:139) ~[forge-1.12.2-14.23.5.2768.jar:?]
    at net.minecraft.launchwrapper.Launch.launch(Launch.java:115) [launchwrapper-1.12.jar:?]
    at net.minecraft.launchwrapper.Launch.main(Launch.java:28) [launchwrapper-1.12.jar:?]
Caused by: java.lang.NoClassDefFoundError: org/apache/maven/artifact/versioning/ArtifactVersion
    at net.minecraftforge.fml.relauncher.libraries.LibraryManager.findLibraryFolder(LibraryManager.java:126) ~[forge-1.12.2-14.23.5.2768.jar:?]
    at net.minecraftforge.fml.relauncher.libraries.LibraryManager.setup(LibraryManager.java:77) ~[forge-1.12.2-14.23.5.2768.jar:?]
    at net.minecraftforge.fml.relauncher.FMLLaunchHandler.setupHome(FMLLaunchHandler.java:106) ~[forge-1.12.2-14.23.5.2768.jar:?]
    ... 5 more
Caused by: java.lang.ClassNotFoundException: org.apache.maven.artifact.versioning.ArtifactVersion
    at java.net.URLClassLoader.findClass(Unknown Source) ~[?:1.8.0_191]
    at java.lang.ClassLoader.loadClass(Unknown Source) ~[?:1.8.0_191]
    at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source) ~[?:1.8.0_191]
    at java.lang.ClassLoader.loadClass(Unknown Source) ~[?:1.8.0_191]
    at net.minecraftforge.fml.relauncher.libraries.LibraryManager.findLibraryFolder(LibraryManager.java:126) ~[forge-1.12.2-14.23.5.2768.jar:?]
    at net.minecraftforge.fml.relauncher.libraries.LibraryManager.setup(LibraryManager.java:77) ~[forge-1.12.2-14.23.5.2768.jar:?]
    at net.minecraftforge.fml.relauncher.FMLLaunchHandler.setupHome(FMLLaunchHandler.java:106) ~[forge-1.12.2-14.23.5.2768.jar:?]
    ... 5 more
[16:39:24] [main/INFO]: [java.lang.ThreadGroup:uncaughtException:-1]: net.minecraftforge.fml.relauncher.FMLSecurityManager$ExitTrappedException
[16:39:24] [main/INFO]: [java.lang.ThreadGroup:uncaughtException:-1]:     at net.minecraftforge.fml.relauncher.FMLSecurityManager.checkPermission(FMLSecurityManager.java:49)
[16:39:24] [main/INFO]: [java.lang.ThreadGroup:uncaughtException:-1]:     at java.lang.SecurityManager.checkExit(Unknown Source)
[16:39:24] [main/INFO]: [java.lang.ThreadGroup:uncaughtException:-1]:     at java.lang.Runtime.exit(Unknown Source)
[16:39:24] [main/INFO]: [java.lang.ThreadGroup:uncaughtException:-1]:     at java.lang.System.exit(Unknown Source)
[16:39:24] [main/INFO]: [java.lang.ThreadGroup:uncaughtException:-1]:     at net.minecraft.launchwrapper.Launch.launch(Launch.java:138)
[16:39:24] [main/INFO]: [java.lang.ThreadGroup:uncaughtException:-1]:     at net.minecraft.launchwrapper.Launch.main(Launch.java:28)
 

[thegiantredpanda]

Forge version: 1.12.2-14.23.5.2768

[thegiantredpanda]

A custom launcher, but it worked with forge-1.12.2-14.23.2.2651. but I had to update due to mod requiring a higher forge version.

[thegiantredpanda]

So this is a launcher error, not forge?