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Sherif Hassan

GridView/ListView bound to Backend Query shows no data in Run/Test mode — TypeError in console

Widgets & Design

I have a GridView (also tested with ListView) bound to a Backend Query (Collection: manufacturers, Query Type: List of Documents). The query returns data correctly — confirmed 2 documents exist in Firestore via the Firestore Data Manager (Toyota, Opel), with fields including nameAr, logoUrl, manufacturerId.

However, no items render in Run/Test mode — the screen stays completely empty (only the AppBar/Page Title shows). This happens consistently even after deleting and recreating the widget from scratch.

I checked the browser console and found this error during Run mode:

Uncaught TypeError: J.c1(...).al is not a function

main.dart.js:194

Firestore Rules are deployed and set to allow read: true for the manufacturers collection.

What have you tried so far?

- Verified data exists in Firestore via Firestore Data Manager

- Recreated the Backend Query on the GridView (Collection: manufacturers, List of Documents, no filters, no limit)

- Deleted the GridView entirely and rebuilt with a fresh ListView + Backend Query — same result

- Confirmed Firestore Rules are deployed (not blocking reads)

- Checked browser console — found the TypeError above

Did you check FlutterFlow's Documentation for this topic?
No
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