Recently Added folders - strange contents!

[RobA]

I'm not aware that I have deleted any MinimServer files. I have not uninstalled/reinstalled only undertaking the updates as they come in by clicking these.
MiminServer is running on my NAS - QNAP HS-251+.
The only thing different that happened today was I shut the NAS down as we had an electrician in today then restarted it when the electrical work was complete. The NAS shut down and restarted without issue.
Any further help you can offer would be appreciated. Thanks for your quick response this evening.