I cant get ANY shaders running. After trying everything I can, I am now wondering if the issue might be with the M1 chip of my mac? Maybe this is a long shot but I have no other ideas anymore.
Problem solved finally. And I did not even need this newest update (but thank you very much @scudly).
It seems the examples I used from online tutorials had some outdated syntax for the vertex shader.
If someone need the correct one, simply check the examples/topics/shaders in your version of Processing package. I didn’t realize they had shader examples there