But are the photos being transferred? Double-check.
The error message might be due to bluetooth being the chosen protocol and FTP being cancelled by the system. FTP might have been the default.

Some bluetooth cards can be faulty & should probably be replaced on warranty.

I don't use bluetooth on this particular computer of mine because this particular bluetooth is not reliable. I gave up on the wireless keyboard & mouse several years ago. However, I have not had any issues transferring files via bluetooth including lately. Keep in mind I'm a Mac user.

About 6 or 7 years ago I received photos via Bluetooth that came from someone who was probably in a nearby shop or its private car park lol. (I was living behind the shopping street.)