When I try open a server it crashes

[somber cosmos]

I have instaled java version "21.0.8" and tried to launch server pack from curse forge
what can I do to solve this problem ? is it java related problem ? I think it's a java problem because I deleted Mekanism Extras and tried again. It also crashed.

[thin coral]

make sure to use the official server pack not the client pack

[somber cosmos]

where can I find offical one ? file in cursefore is not offical ?

[thin coral]

you should have only these files, to start

[somber cosmos]

Yes I downloded from exacly there and clicked start server bat , accepted eula etc and it crashed 😄

[thin coral]

did you modify anything in the folder before running the startserver script?

[somber cosmos]

no it's a fresh vds sever , I just download java 21 and clicked startserver.bat nothing changed

[thin coral]

I expect this is a language issue where your system's language settings are set to use a language with non-ascii lowercase characters

add the following as java arguments to the list in the yaml:
-Dfile.encoding=UTF-8
-Duser.language=en
-Duser.region=US

should look something like this

[somber cosmos]

I got this error : Error: Could not find or load main class Dfile.encoding=UTF-8
Caused by: java.lang.ClassNotFoundException: Dfile.encoding=UTF-8

[thin coral]

you may be missing the -.

[somber cosmos]

yes you are right it's worked , Thank you very much! I got this error multiple times from other modpacks as well I know the issue at least right now

[thin coral]

you can add those arguments to the user args or the launch scripts for servers or to the Additional Arguments (or java arguments depending launcher) for clientside also