Describe the crash

so when i try to setup the server it will start up normally but then crash and stop then gives me a crash report

To Reproduce

clicking on the Run.bat

Crash Logs

crash-2022-07-24_16.09.54-server.txt

Modpack Version

3.1.1a

Server or singleplayer

Server

Version the world was created on:

3.0.1a

Other...

No response

Additional context

No response

Try a reinstall

of the server? i would lose the world right unless i can move it over modpacks seems fine the server just wont start

you can copy the world folder out and then copy it back in after

and the reason a reinstall may help is because there appears to be a corrupted jar in your install, resulting in a missing java class

you can copy the world folder out and then copy it back in after

and the reason a reinstall may help is because there appears to be a corrupted jar in your install, resulting in a missing java class

that seems to have worked out thanks