Site locks up when attempting to mount image backup

As the title says, whenever I attempt to mount a backup image the entire page thinks for a while and then hangs completely with no response. I have tried this twice now, once with an image of only a couple KB and it still hangs for hours on end. I started it at 5:30 yesterday and it was still frozen at 8:15 this morning. Does anyone have any information on why this could be happening? There isn’t even a log if it being done.

Provide more details on this, pictures are good.

I am simply going to backups > my computer > select any image backup

and whenever i click that button, the entire service stops working

Can anyone give me any clues?

Upon further inspection, running urbackupsvr run -v debug gave us the following result before crashing completely

ERROR: Thread exit with unhandled std::exception basic_string::_M_create terminate called after throwing an instance of 'std::length_error' what(): basic_string::_M_create
Aborted (core dumped)

does this help in any way?

Not really. See here on how to further narrow down the location: