It's understandable to be concerned when Test Mode isn't working as expected, especially after an update. A blank screen in Test Mode often points to specific rendering or configuration issues that can be exposed by debug mode. Here's a breakdown of potential solutions and insights based on your description: ### Troubleshooting the Blank Screen in Test Mode Since you've mentioned an error in the Developer tools console, that's the best place to start.

Many blank screen issues in Test Mode are related to **RenderFlex errors**. 1. **Check the Browser Console for RenderFlex Errors:** * Open your browser's developer console (usually by pressing `F12` or right-clicking and selecting 'Inspect', then navigating to the 'Console' tab).

* Look for red error messages, especially those mentioning `RenderFlex` overflow or layout constraints. * **Why it happens:** These errors occur when there are layout conflicts where a child widget attempts to grow infinitely within a parent widget that also allows or encourages infinite growth. This combination (e.g., a `Column` or `Row` with `Main axis size` set to `Maximized` containing a child with `Flex` set to `Expanded`) can prevent the page from rendering.

* **How to fix:** * Identify nested `Column`, `Row`, or `Container` widgets on the blank page. * Examine their `Flex` and `Main axis size` settings. * Adjust these settings to prevent unbounded growth.

For example, change a child widget's `Flex` property from `Expanded` to `Default` or `Minimize`, or adjust the parent's `Main axis size` if it's set to `Maximized` unnecessarily. * It might take a few iterations of tweaking layout settings to identify and fix the specific conflicting widgets. 2.

**Disable the Debug Panel:** * Sometimes, the Debug Panel itself can interfere with Test Mode rendering. * In Test Mode, click the three dots next to the Debug Panel button and toggle the switch to disable it. This has resolved \"Build Failed\" and other runtime errors for some users.

3. **Project Configuration Check:** * After an update, sometimes project configurations can be inadvertently altered. * Go to your FlutterFlow project settings and double-check your Firebase and API configurations to ensure everything is still correctly set up.

4. **Clear Cache and Reload:** * Perform a hard refresh of your browser or clear your browser's cookies and cache. Browser caching can sometimes prevent the latest build from loading.

* When reloading Test Mode, you might need to do it twice to ensure the latest changes are fetched. You can also try clicking \"Instant Reload\" or starting a completely new test session. 5.

**Check for Other Project Errors:** * Even if the design screen shows no obvious errors, there might be unresolved issues within specific components, incorrect data type assignments, or empty required fields (e.g., initial Map center Lat Lng if you have map widgets). * Thoroughly check all parts of your project for any warnings or errors. 6.

**Custom Code or Plugin Compatibility:** * If you have custom code or third-party plugins, especially if the error is specific to web test mode, they might be attempting to access functionality not implemented or supported on the web platform. Review your custom code and plugins for web compatibility. 7.

**Run Locally for Detailed Debugging:** * If the issue persists, download your project code and run it via a local IDE (like VS Code or Android Studio). This often provides more detailed error messages in the console, which can help pinpoint the exact cause. You can run it locally without the debug panel by executing `flutter run` in your project directory.

### Regarding the Update Release Process It's natural to be frustrated when an update introduces issues that affect basic functionalities like Test Mode. FlutterFlow, like many complex software platforms, continuously updates to introduce new features, improve performance, and fix bugs. Occasionally, new updates can introduce unforeseen issues or conflicts with existing projects due to the vast range of project configurations and custom implementations.

The FlutterFlow team actively monitors for such issues and often releases hotfixes to address them quickly. Past instances show that platform-level issues introduced by updates are typically identified and resolved by the FlutterFlow team without requiring users to make changes to their projects. They do release patch updates and hotfixes when critical issues are identified.

By checking your console errors and systematically going through the troubleshooting steps above, you should be able to identify and resolve the issue with your Test Mode.

Test mode is not loading with errors in dev console.