There was a similar issue that was brought up in the community, sharing here in case it’s helpful:
Seeing as you got this warning:
WARN! Due to `builds` existing in your configuration file, the Build and Development Settings defined in your Project Settings will not apply. Learn More: https://vercel.link/unused-build-settings
It might be worth also removing the builds
section on your vercel.json
file if you already have settings in the “Build & Development Settings”. From relevant documentation:
A Project has several settings that can be found in the dashboard. One of those sections, Build & Development Settings, is used to change the way a Project is built.
However, the Build & Development Settings are only applied to zero-configuration deployments.
If a deployment defines the
builds
configuration property, the Build & Development Settings are ignored.