Unexpected input(s) 'include-prerelease', valid inputs are ['dotnet-version', 'dotnet-quality', 'global-json-file', 'source-url', 'owner', 'config-file', 'cache', 'cache-dependency-path']

Possible null reference return.

#warning: 'To protect potentially sensitive information in your connection string, you should move it out of source code. You can avoid scaffolding the connection string by using the Name= syntax to read it from configuration - see https://go.microsoft.com/fwlink/?linkid=2131148. For more guidance on storing connection strings, see http://go.microsoft.com/fwlink/?LinkId=723263.'

Possible null reference return.

#warning: 'To protect potentially sensitive information in your connection string, you should move it out of source code. You can avoid scaffolding the connection string by using the Name= syntax to read it from configuration - see https://go.microsoft.com/fwlink/?linkid=2131148. For more guidance on storing connection strings, see http://go.microsoft.com/fwlink/?LinkId=723263.'