the second of those gives you the error message and the problem you need to fix.
usage: matrix_demo.py [-h] [--cascaded CASCADED]↵ [--block-orientation {0,90,-90}] [--rotate {0,1,2,3}]
matrix_demo.py: error: unrecognized arguments: 1548528575364
You aren't calling the command with the correct arguments... you are just passing it a timestamp
Maybe you don't need the