immer wenn ich den mod-Server starte kommt diese fehlermeldung:

java -Xms2G -Xmx2G -jar server.jar --noguiA 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:78)

       at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

       at java.base/java.lang.reflect.Method.invoke(Method.java:567)

       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

C:\Users\marce\Desktop\minecraft 1.17>java -Xms1000M -Xmx1000M -jar minecraft_server.1.17.jar

Error: A JNI error has occurred, please check your installation and try again

Exception in thread "main" java.lang.UnsupportedClassVersionError: net/minecraft/server/Main has been compiled by a more recent version of the Java Runtime (class file version 60.0), this version of the Java Runtime only recognizes class file versions up to 52.0

       at java.lang.ClassLoader.defineClass1(Native Method)

       at java.lang.ClassLoader.defineClass(Unknown Source)

       at java.security.SecureClassLoader.defineClass(Unknown Source)

       at java.net.URLClassLoader.defineClass(Unknown Source)

       at java.net.URLClassLoader.access$100(Unknown Source)

       at java.net.URLClassLoader$1.run(Unknown Source)

       at java.net.URLClassLoader$1.run(Unknown Source)

       at java.security.AccessController.doPrivileged(Native Method)

       at java.net.URLClassLoader.findClass(Unknown Source)

       at java.lang.ClassLoader.loadClass(Unknown Source)

       at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)

       at java.lang.ClassLoader.loadClass(Unknown Source)

       at sun.launcher.LauncherHelper.checkAndLoadMain(Unknown Source)

C:\Users\marce\Desktop\minecraft 1.17>pause

Drücken Sie eine beliebige Taste . . .

das ist die fehlermeldung die immer kommt.

Kann mir jemand sagen was ich falsch mache ?Ich betreibe jetzt schon 5 Jahre minecraft server und das kam bis jetzt noch nicht.Ich kann die .jar aber auch so nicht ausführen.Vielen dank für jede Antwort