Hi @crokkon, thank you so much for your detailed comment and now I understand what you meant and fully agree with you! I misunderstood your comment like you meant the code itself may not work :)

One last comment is of course I also tried to change cli.py and thought it was the right place to change, but you know in that case, I basically need to change every command that may raise the exception, which was too much, so I took the bad design without thinking further :) But you and @holger80 are 100% right in this case. Thank you so much again and I'll close my PR.