Blaker22

Thanks for the help,After downloading java 8 and switch the default to java 8,I can run forge.

I had java 11 installed,or did you need specifically java 8? I am using ubuntu and I can't found any java 8 installer and the default installer for java are java 11. Here are my java verison,maybe i make some mistake?

I am trying to run forge 1.12.2 - 14.23.5.2768 ( recommended version) and it's crash,I'm using ubuntu and I attach the crash report crash report