Dear Christian,
I've just submitted a PR [1] that fixes an issue occurring with some combination of browser/proxy and that we stumbled upon in 9.5.3 beta.
I attach a picture that shows how it looks like in DBA. To make error disappear it's sufficient to put a . in the query input.
We propose to make query parameter optional in signature of RestXQ handling that call.
Let us know if any further info is required.
Regards,
Marco.
basex-talk@mailman.uni-konstanz.de