PS C:\Users\ouzin\chanel-pwa> ionic serve --lab
ng.cmd run app:serve --host=localhost --port=8100
[ng] Schema validation failed with the following errors:
[ng] Data path “.builders[‘app-shell’]” should have required property ‘class’.
[ERROR] ng has unexpectedly closed (exit code 1).
The Ionic CLI will exit. Please check any output above for error details.