[FEATURE] Command option -all breaks on a faulty site

[Make66]

Is your feature request related to a problem?

This is a follow-up on #717. Processing many sites will break in preparation phase if one site is misconfigured or throwing an exception(?).

Describe the solution you'd like

A skip-over of a faulty site and continue processing the rest would be very helpful since even in production installations there may be sites in setup-phase not yet ready. The faulty site could be mentioned on CLI output to facilitate bug hunting.

Describe alternatives you've considered

No response

Additional context

No response

Code of Conduct

• [X] I agree to follow this project's Code of Conduct.

[Make66]

Same applies when using on a --sites list

[eliashaeussler]

Can you post an example exception that should be catched?