I got the following error message with OpenGL on Ubuntu 18.04.3:
X Error of failed request: GLXBadFBConfig
Major opcode of failed request: 154 (GLX)
Minor opcode of failed request: 34 ()
Serial number of failed request: 41
Current serial number in output stream: 40
My guess is that there is a problem with the graphics card/OpenGL version.
Has anyone an idea what the specific problem could be?