Don't fail silently when phlow.token is missing

[praqma-thi]

I just went through the git phlow with Johan, but struggled a bit at the start.
It silently failed whenever we wanted to interact with issues, but --verbose helped.
The phlow.token wasn't configured, (nor was GHI installed, but I don't know if that's still a requirement).

It could be nice to get an error message on that, though.

[buep]

Your console log output would be nice, I'm not fully sure how to reproduce.

But never the less, I think it makes sense to make this issue about never failing silent at all. Every time we can't recover from a problem or fail automatically, we should explain to the user what went wrong and fail with a noticeable error message.

[praqma-thi]

Console log was on Johan V.'s machine. He uses a Mac.
Maybe I can get him to remove the plow.token and run some more commands again.
I'll set up a reminder, maybe snag him on a Friday.

[buep]

No worries, we would have to reproduce in a test anyway... so just if some more information about reproducing would also be fine.

And as mentioned, this issues should be about not failing silently.