Firebase error (Am I dumb??)

SOLUTION : I've deleted and redone the Firebase project from scratch.
I must admit I'm a bit frustrated because I didn't really understand the mistake I'd made, but hey...



Hello, I got this error (on the console) :

dart_sdk.js:12007 Uncaught (in promise) 
Error
    at Object.createErrorWithStack (dart_sdk.js:12007:12)
    at Error._throw (dart_sdk.js:13480:18)
    at Error.throwWithStackTrace (dart_sdk.js:13477:18)
    at async._AsyncCallbackEntry.new.callback (dart_sdk.js:47537:18)
    at Object._microtaskLoop (dart_sdk.js:47394:13)
    at _startMicrotaskLoop (dart_sdk.js:47400:13)
    at dart_sdk.js:43200:9

And this is the action causing the error :

I'd like to point out that I'm not a beginner with FlutterFlow, I've been using the software for over a year, I've already published an application on the AppStore and I've done it from A to Z with FlutterFlow, so all that to say that I don't think I've made a "basic" mistake.

Maybe I did, but all the stuff like :

- Add [email protected] to firebase

- Activate authentication on firebase

- ...

These are things I've already done, and this really feels like a bug (probably a mistake on my part, but weird).

I've put up a video explaining in detail what's going on, it's really weird, thanks for your help!

⚠️ WATCH THIS ⚠