I’m going to preface this by saying what I am about to suggest is ill-advised, but if you absolutely have to get something to work and they have not pushed the patch to anvil-uplink yet, (The fix is also still not in the github anvil-runtime master repo) you could… Go to that line 983 in _server.py in your anvil uplink code and diy patch it from this:
_json = numpy.asscalar(_json)
to this:
try:
_json = numpy.asscalar(_json)
except AttributeError:
_json = _json.item()
…but you shouldn’t do that, you should wait for a fix if you can.