Hi everyone,
I've been stuck with a persistent Test Mode failure and would appreciate any pointers.
What's happening: Since configuring a "Trigger Push Notification" action (on a course wall post trigger), Run/Test Mode fails every time with:
test_mode_codegen ... SandboxFetchException(410): Failed to fetch project-proto: HTTP 410 — {"error":"Session is deleted"}This happens consistently, even after a full page reload and a complete logout/login.
What I've already ruled out:
Deploy works fine — my Cloud Functions deploy successfully with no errors. Only Run/Test Mode is affected.
Cloud Functions region — confirmed matching (europe-west3, consistent with my Firestore in eur3).
IAM permissions — confirmed the FlutterFlow service account has Cloud Functions Admin, Editor, and Service Account User roles on my Firebase project.
Along the way I also hit a pubspec version conflict (web vs cloud_functions_web) and a "Failed to list functions" error — both resolved.
So this looks like a sandbox/session infrastructure issue on FlutterFlow's side rather than a project configuration problem. I've also noticed a few other threads here describing similar recurring Test Mode session failures.
I've already reached out via email and live chat without any response so far. Has anyone found a reliable workaround, or is this a known issue being tracked? Any help appreciated — thanks!