[firebase_database] MissingPluginException listening to data

[juaoose]

While trying to migrate a query from Typescript to Dart I have been receiving the following exception:

The following MissingPluginException was thrown while activating platform stream on channel
streamers-[DEFAULT]-null-DatabaseEventType.value-[{type: orderBy, name: orderByChild, path:
activeSessionId}, {type: cursor, name: startAt, value: }, {type: cursor, name: endAt, value:
�}]#18:

Sample code: (sample app https://github.com/juaoose/db_sample)

final streamersQuery = FirebaseDatabase.instance
    .ref("streamers")
    .orderByChild("activeSessionId")
    .startAt("\u{0000}")
    .endAt("\u{FFFF}");

streamersQuery.onValue.listen((event) {
  print("@@@@@@@@@@@@@@@@@@@@@@@@@@@@");
  print(event.snapshot.value);
});

I have tried cleaning the project, using get() to check that it isn't a general problem accessing the database, but haven't been able to find any further clue.

The relevant part of the db rule is ".read": "query.orderByChild == 'activeSessionId' && query.startAt == '\u0000' && query.endAt == '\uFFFF'"

Has anyone run into this, or knows if maybe I am building the query incorrectly? Thank you.