bridgestrap still scans bridges but won't admit that any of them exist

I see in bridgestrap's logs that it is still scanning bridges, e.g.

2022/02/08 19:56:46 Tested 25 bridges: 24 (96.0%) functional; 1 (4.0%) dysfunctional.

and meskio says that "the graphana dashboard for bridgestrap looks good, most bridges being functional"

but whenever I try to test any bridge via the web interface with its fingerprint, including fingerprints that I just watched bridgestrap successfully reach in its logs, it tells me

no resources for the given id

That is, it looks like the backend testing is going fine, but somehow the frontend has become disconnected from it.