Forge Server Error Please Help!

Hello, I am currently trying to get a forge server setup so I can play the Pixelmon mod with some friends on a private server and have run into some issues with launching my forge server file, I downloaded the forge 12.2.2-14.23.5.2859 installer, downloaded it into a folder on my desktop, ran the Mc server file, agreed to Eula, made a run.bat file to launch the forge server at 6GBs, and when I try launching I get this issue:

Pixelmon Server>java -Xmx6144M -Xms6144M -jar forge-1.12.2-14.23.5.2859-universal.jar --nogui
We appear to be missing one or more essential library files.
You will need to add them to your server before FML and Forge will run successfully.java.lang.ClassNotFoundException: org.objectweb.asm.Type
        at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:636)
        at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:182)
        at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:519)
        at java.base/java.lang.Class.forName0(Native Method)
        at java.base/java.lang.Class.forName(Class.java:466)
        at net.minecraftforge.fml.relauncher.ServerLaunchWrapper.run(ServerLaunchWrapper.java:53)
        at net.minecraftforge.fml.relauncher.ServerLaunchWrapper.main(ServerLaunchWrapper.java:34)

I've tried using another minecraft server jar file from a different source to see if that would solve anything but its still coming up with this issue.

Any help is greatly appreciated, thanks for your help in advance.