Posted by gouessej on Feb 03, 2020; 11:43am
URL: https://forum.jogamp.org/Caught-subsequent-GLException-Error-freeing-OpenGL-context-werr-0-on-thread-main-FPSAWTAnimator-00-T0-tp4040316p4040326.html

Hello

You probably use a terribly obsolete version of JOGL:
http://forum.jogamp.org/JOGL2-GLCapabilities-Windows-td2153961.html