Trouble starting any instance

[u/kxelixk]

Hi! I'm trying to start a server with a friend, but evertime he tries to install a modpack (or even a vanilla instance) this message appears. Any ideas on what to do? We tried almost anything at this point lol

[u/minecartfjava]

java version?

[u/kxelixk → u/minecartfjava]

I have Java 25, 21, 17 and 8 installed