With Cassiopeia I get no errors on my homepage.
However, I get the following error when the T4 template is used:
JQMIGRATE: Migrate is installed, version 3.4.1
DevTools failed to load source map: Could not load content for https://www.xxxxxx.com/media/vendor/jquery-
migrate/js/jquery-migrate.min.map: Unexpected token '<', "<!DOCTYPE "... is not valid JSON
The error is creating an SEO issue.
Any assistance with this matter would be greatly appreciated.