I can't make a single shader run in Processing

[Amirk]

@scudly

String[] vertSrc = { """
uniform mat4 transformMatrix;
attribute vec4 position;
void main() {
  gl_Position = transformMatrix * position;
}
""" };

Thanks but I have have tried creating the subfolder data etc and it does not work.
I have version 4.0b7 and I run it on Mac with the M1 chip (if that is relevant?).
I tried including shaders as Strings as you suggested. Gave me this:

RuntimeException: Cannot compile vertex shader:
ERROR: 0:2: '' :  #version required and missing.
ERROR: 0:3: 'attribute' : syntax error: syntax error

RuntimeException: Cannot compile vertex shader:
ERROR: 0:2: '' :  #version required and missing.
ERROR: 0:3: 'attribute' : syntax error: syntax error

Could not run the sketch (Target VM failed to initialize).
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