Category-builder gives 500 and traceback `Unable to find bucket matching 'aw-watcher-window_unknown'`

[tobixen]

Pressing the button for categorization builder and I get redirected to http://localhost:5600/#/settings/category-builder. On the top of the page it is written Unable to find bucket matching 'aw-watcher-window_unknown' (hostname filter set to 'None') (I'm quite sure that before restarting things it only said "Internal Server Error"). The traceback looks like this:

Traceback (most recent call last):
  File "/home/tobias/activitywatch/aw-server/aw_server/rest.py", line 320, in post
    result = current_app.api.query2(
        name, query["query"], query["timeperiods"], False
    )
  File "/home/tobias/activitywatch/aw-server/aw_server/api.py", line 348, in query2
    result.append(query2.query(name, query, starttime, endtime, self.db))
                  ~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/tobias/activitywatch/aw-core/aw_query/query2.py", line 418, in query
    interpret(var, val, namespace, datastore)
    ~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/tobias/activitywatch/aw-core/aw_query/query2.py", line 392, in interpret
    namespace[var.name] = val.interpret(datastore, namespace)
                          ~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^
  File "/home/tobias/activitywatch/aw-core/aw_query/query2.py", line 140, in interpret
    call_args.append(arg.interpret(datastore, namespace))
                     ~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^
  File "/home/tobias/activitywatch/aw-core/aw_query/query2.py", line 140, in interpret
    call_args.append(arg.interpret(datastore, namespace))
                     ~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^
  File "/home/tobias/activitywatch/aw-core/aw_query/query2.py", line 143, in interpret
    result = functions[self.name](*call_args)  # type: ignore
  File "/home/tobias/activitywatch/aw-core/aw_query/functions.py", line 88, in g
    return f(*args, **kwargs)
  File "/home/tobias/activitywatch/aw-core/aw_query/functions.py", line 117, in g
    return f(*args, **kwargs)
  File "/home/tobias/activitywatch/aw-core/aw_query/functions.py", line 141, in q2_find_bucket
    raise QueryFunctionException(
        f"Unable to find bucket matching '{filter_str}' (hostname filter set to '{hostname}')"
    )

[tobixen]

Oh, perhaps this is a problem with aw-core rather than aw-server.