Hey guys,
I am facing a really puzzling issue with 2 flows that are being trigered by clicking 2 buttons on a SharePoint doc library.
Both the flows and the buttons are really old and were working fine until today.
I've checked for flow IDs, connections issues within the flows etc and no luck.
I've also cleared the cookies in the browsers with which I tried and still did not work. Issue is affecting users of all roles.
The issue is the following:
Upon clicking the button which trigers the flow, the run flow window that usually appears over the right side of the doc library comes up with an error - failed to fetch with no option to do anything besides closing it.

Any help will be greatly appreciated!
Regards,
Yordan