My browser fails to establish web socket connection

[gohenry-luca]

If you are looking for help, please confirm the following...

• I confirm I have searched the Docs, Codemagic Sample Projects, and GitHub Discussions.
• I confirm the software versions on my local computer match the ones in CI environment (e.g. Xcode version, Gradle version). See here
• I confirm I am able to do a fresh clone of the repository and build the project on my local computer.

Which mobile framework are you using?

Flutter (Dart)

Steps to reproduce

Click on start a new build for the application

Expected results

I should be able to select a branch

Actual results

The branches dropdown is stuck on loading

Since yesterday afternoon we've been unable to "Select a branch" for our workflows.
It just says "branches are loading" and that never changes.

Please note that when I use the Codemagic APIs directly I can get information about the app (and branches), and I can trigger builds successfully. This only seems to be an issue with the Codemagic website.

We do see this error in the network tab in Chrome:
Access to XMLHttpRequest at 'https://ws2.codemagic.io/socket.io/?EIO=4&transport=polling&t=Ox75ggs' from origin 'https://codemagic.io/' has been blocked by CORS policy: The value of the 'Access-Control-Allow-Origin' header in the response must not be the wildcard '*' when the request's credentials mode is 'include'. The credentials mode of requests initiated by the XMLHttpRequest is controlled by the withCredentials attribute.

Build id (optional)

No response