Error starting build - Android build failing on App Center

Question

My AppCenter Android build pipeline started failing all of a sudden. Not much information other than "Error starting build" title and "Could not queue the build because there were validation errors or warnings." as body. Just FYI, the android project was generated using Flutter.

Answer 1

I have contacted App Center support and they replied:

"For now, there is a workaround, on the App Center portal, please go to your application config, without making any change, could you please click on Save and Build".

This worked for me.

Answer 2

As per Marcio,

Go into the App > Build > Branch > Configuration

And then just click Save (without making changes)