Test Mode - Broken for a few days - CORS

[AlexWrench]

Can we access your project?

• I give permission for members of the FlutterFlow team to access and test my project for the sole purpose of investigating this issue.

Current Behavior

Permission to access project: cors-issue-demo-b2a7a0
When using the test mode feature, the test mode fails due to a 401 Unauthorized strict-origin-when-cross-origin error.

Request URL:
https://tm-prod.dreamflow.cloud/72f860f9-525d-4b3e-b4fd-d23c484d17d7/preview/cors-issue-demo-b2a7a0/
Method: GET

Expected Behavior

I expect the test mode to run without access issues. Also, the stability of the test mode needs attention given this issue is resolved. Extra info at the bottom.

Steps to Reproduce

1. Create a new project
2. Press Test Mode

Reproducible from Blank

• The steps to reproduce above start from a blank project.

Bug Report Code (Required)

IT48lcmBw4VgoeFK187ude9VnjwXJjI7UL83isEbZA88J5zKB+wAYvf7P1FWTLynS3NcMU2j/To1/PfqveHTEMdeOQ6Wf4RRzaV+WhbwQnGtVYiJOrm/fW1RGfFPIBzH4bWG3Qp4FOlecU5k3V6IBN6RbC3qNZf4OmwnHfG1KdeK2SrDX1iXc2URm05KZDPz

Visual documentation

Environment

- FlutterFlow version: 6.6.111
- Platform: Windows
- Browser name and version: Chrome 148.0.7778.179 (Official Build) (64-bit)
- Operating system and version affected: Win10

Additional Information

Run mode is working fine though I do prefer the test mode given the regular FlutterFlow windows app crashes I experience with run mode. Most of my time lost whilst working with FlutterFlow before this issue was from inconsistent Test Mode stability, often failing and requiring multiple hot reloads in the browser to get the application to run. It can take up to 15mins for me to get into the app on bad days. At the moment, being forced to use the more unstable Run mode is costing me up to a couple of hours work per day, inline with the time lost on Test mode given that I was not experiencing this issue.

[Juansarmi]

Hello,

I'm sorry to hear that you're experiencing this issue. Unfortunately, I haven't been able to reproduce the error on my end.

Over the past few days, the FlutterFlow team has been rolling out several updates, so I understand why you may have encountered some instability with Test Mode. However, everything now appears to be functioning as expected on our side.

If you are still facing this issue, I would highly recommend reaching out to our support team, as this may be related specifically to your project settings or local environment. You can contact support either by emailing support@flutterflow.io or by using the in-app chat feature.

Kind regards

[AlexWrench]

Hey @Juansarmi , thanks for getting back to me.

I thought this issue might be VPN related (work uses tailscale) though even when disconnecting from my work network I am still experiencing the same issues.

I also have additional issues on other projects...

The call to sync (POST: https://sandbox-ygxkweukma-uc.a.run.app/api/sandboxes/projectUUID/sync returns 503 Service Unavailable.
The call to run (POST: https://tm-prod.dreamflow.cloud/projectUUID/run returns 504 Gateway Timeout.

Are you able to check logs on the initial endpoint mentioned above as well as these to investigate further? I will also follow up with support directly.

Thanks,

[AlexWrench]

To add to this I can see others with the same issue in the community forum.

Example:
https://community.flutterflow.io/ask-the-community/post/error-unauthorized-H0IdSv1JXReUl9U#replies

[Juansarmi]

Hi! Sorry to hear you're experiencing this issue.

Unfortunately, I'm not able to reproduce the error on my end. It might be something specific to your project.

In this case, I recommend reaching out to support via the in-app chat or by email at support@flutterflow.io . They have the tools and access needed to take a closer look at your specific case.

Best regards.