Created attachment 170476 [details] Screenshot of the error STEPS TO REPRODUCE 1. Name the phone with a slash, for example, `foo/bar` 2. Click the phone on the sidebar OBSERVED RESULT Error. If try to edit the location manually, you get something else instead of `mtp://`, so it is possible we can't bypass it manually and this bug happens internally.
Confirmed in Frameworks 6.2.0, it seems to me that there is a wrongful assumption the device name will be a valid path name.