How do I fix the exit code 1 crash? This crash may be caused by an invalid java runtime configuration.

[Dwonty]

This is the crash report I got for the thing.

[19:45:52] [main/INFO]: ModLauncher running: args [--username, Dwonty, --version, forge-36.2.31, --gameDir, C:\Users\royrh\curseforge\minecraft\Instances\All the Mods 6 - ATM6 - 1.16.5, --assetsDir, C:\Users\royrh\curseforge\minecraft\Install\assets, --assetIndex, 1.16, --uuid, 6972e4f46b97457ab4de99e679b927b1, --accessToken, ????????, --userType, msa, --versionType, release, --width, 1024, --height, 768, --launchTarget, fmlclient, --fml.forgeVersion, 36.2.31, --fml.mcVersion, 1.16.5, --fml.forgeGroup, net.minecraftforge, --fml.mcpVersion, 20210115.111550]
[19:45:52] [main/INFO]: ModLauncher 8.1.3+8.1.3+main-8.1.x.c94d18ec starting: java version 1.8.0_51 by Oracle Corporation
[19:45:52] [main/WARN]: LEGACY JDK DETECTED, SECURED JAR HANDLING DISABLED
[19:45:53] [main/INFO]: Added Lets Encrypt root certificates as additional trust
[19:45:53] [main/INFO]: SpongePowered MIXIN Subsystem Version=0.8.4 Source=file:/C:/Users/royrh/curseforge/minecraft/Install/libraries/org/spongepowered/mixin/0.8.4/mixin-0.8.4.jar Service=ModLauncher Env=CLIENT
[19:45:55] [main/INFO]: Launching target 'fmlclient' with arguments [--version, forge-36.2.31, --gameDir, C:\Users\royrh\curseforge\minecraft\Instances\All the Mods 6 - ATM6 - 1.16.5, --assetsDir, C:\Users\royrh\curseforge\minecraft\Install\assets, --uuid, 6972e4f46b97457ab4de99e679b927b1, --username, Dwonty, --assetIndex, 1.16, --accessToken, ????????, --userType, msa, --versionType, release, --width, 1024, --height, 768]
[19:45:55] [main/INFO]: [java.lang.ThreadGroup:uncaughtException:1052]: java.lang.RuntimeException: java.lang.ClassNotFoundException: net.minecraft.client.main.Main
[19:45:55] [main/INFO]: [java.lang.ThreadGroup:uncaughtException:1052]:     at cpw.mods.modlauncher.LaunchServiceHandlerDecorator.launch(LaunchServiceHandlerDecorator.java:39)
[19:45:55] [main/INFO]: [java.lang.ThreadGroup:uncaughtException:1052]:     at cpw.mods.modlauncher.LaunchServiceHandler.launch(LaunchServiceHandler.java:54)
[19:45:55] [main/INFO]: [java.lang.ThreadGroup:uncaughtException:1052]:     at cpw.mods.modlauncher.LaunchServiceHandler.launch(LaunchServiceHandler.java:72)
[19:45:55] [main/INFO]: [java.lang.ThreadGroup:uncaughtException:1052]:     at cpw.mods.modlauncher.Launcher.run(Launcher.java:82)
[19:45:55] [main/INFO]: [java.lang.ThreadGroup:uncaughtException:1052]:     at cpw.mods.modlauncher.Launcher.main(Launcher.java:66)
[19:45:55] [main/INFO]: [java.lang.ThreadGroup:uncaughtException:1061]: Caused by: java.lang.ClassNotFoundException: net.minecraft.client.main.Main
[19:45:55] [main/INFO]: [java.lang.ThreadGroup:uncaughtException:1061]:     at java.lang.ClassLoader.findClass(ClassLoader.java:530)
[19:45:55] [main/INFO]: [java.lang.ThreadGroup:uncaughtException:1061]:     at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
[19:45:55] [main/INFO]: [java.lang.ThreadGroup:uncaughtException:1061]:     at cpw.mods.modlauncher.TransformingClassLoader.loadClass(TransformingClassLoader.java:106)
[19:45:55] [main/INFO]: [java.lang.ThreadGroup:uncaughtException:1061]:     at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
[19:45:55] [main/INFO]: [java.lang.ThreadGroup:uncaughtException:1061]:     at java.lang.Class.forName0(Native Method)
[19:45:55] [main/INFO]: [java.lang.ThreadGroup:uncaughtException:1061]:     at java.lang.Class.forName(Class.java:348)
[19:45:55] [main/INFO]: [java.lang.ThreadGroup:uncaughtException:1061]:     at net.minecraftforge.fml.loading.FMLClientLaunchProvider.lambda$launchService$0(FMLClientLaunchProvider.java:51)
[19:45:55] [main/INFO]: [java.lang.ThreadGroup:uncaughtException:1061]:     at net.minecraftforge.fml.loading.FMLClientLaunchProvider$$Lambda$449/102052782.call(Unknown Source)
[19:45:55] [main/INFO]: [java.lang.ThreadGroup:uncaughtException:1061]:     at cpw.mods.modlauncher.LaunchServiceHandlerDecorator.launch(LaunchServiceHandlerDecorator.java:37)
[19:45:55] [main/INFO]: [java.lang.ThreadGroup:uncaughtException:1061]:     ... 4 more
[19:45:55] [main/INFO]: [java.lang.Throwable:printStackTrace:643]:     Suppressed: java.lang.ClassNotFoundException
[19:45:55] [main/INFO]: [java.lang.Throwable:printStackTrace:643]:         at cpw.mods.modlauncher.TransformingClassLoader$DelegatedClassLoader.findClass(TransformingClassLoader.java:282)
[19:45:55] [main/INFO]: [java.lang.Throwable:printStackTrace:643]:         at cpw.mods.modlauncher.TransformingClassLoader.loadClass(TransformingClassLoader.java:136)
[19:45:55] [main/INFO]: [java.lang.Throwable:printStackTrace:643]:         at cpw.mods.modlauncher.TransformingClassLoader.loadClass(TransformingClassLoader.java:98)
[19:45:55] [main/INFO]: [java.lang.Throwable:printStackTrace:643]:         ... 10 more

 

Thanks to anyone that helps!