Error when trying to open modded forge server

[usofnab]

C:\Users\joshc\OneDrive\Desktop\modserver>java -Xmx4096M -Xms4096M -jar forge-1.12.2-14.23.5.2847-universal.jar nogui
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:70)
        at net.minecraftforge.fml.relauncher.ServerLaunchWrapper.main(ServerLaunchWrapper.java:34)
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

This is the crash log if anyone could help

forge-1.12.2-14.23.5.2847-universal is the version 

[ChampionAsh5357]

We generally do not support older versions; however, since yours seems to be an issue with java version, I will make an exception. 1.12.2 requires Java 8 to run. It seems like you are running with a later version of java.

[usofnab]

On 12/5/2022 at 2:39 PM, ChampionAsh5357 said:

We generally do not support older versions; however, since yours seems to be an issue with java version, I will make an exception. 1.12.2 requires Java 8 to run. It seems like you are running with a later version of java.

i installed java 8 after i read something online about it, how do i make sure it opens with java 8 and not java 19? since that seems to be the problem

 

[ChampionAsh5357]

15 hours ago, usofnab said:

i installed java 8 after i read something online about it, how do i make sure it opens with java 8 and not java 19? since that seems to be the problem

Either specify the path of the application to be the java 8 executable or make sure Java 8 shows up on the PATH environment variable before java 19. Probably should set JAVA_HOME to the java 8 location as well.

[usofnab]

On 12/9/2022 at 2:32 PM, ChampionAsh5357 said:

Either specify the path of the application to be the java 8 executable or make sure Java 8 shows up on the PATH environment variable before java 19. Probably should set JAVA_HOME to the java 8 location as well.

how do i do this, my java 8 is installed in C:\Program Files (x86)\Java\jre1.8.0_351

[ChampionAsh5357]

You can google how to add something to your PATH environment variable and create a JAVA_HOME one.

[usofnab]

10 minutes ago, ChampionAsh5357 said:

You can google how to add something to your PATH environment variable and create a JAVA_HOME one.

just tried and it didnt work, instead it stopped me from opening the vanilla server file too

 

[ChampionAsh5357]

15 hours ago, usofnab said:

just tried and it didnt work, instead it stopped me from opening the vanilla server file too

What did you try and what didn't work? What does stop from opening the file mean?