Unreachable code detected

Unreachable code detected

Converting null literal or possible null value to non-nullable type.

Possible null reference return.

Converting null literal or possible null value to non-nullable type.

Converting null literal or possible null value to non-nullable type.

Possible null reference return.

The annotation for nullable reference types should only be used in code within a '#nullable' annotations context. Auto-generated code requires an explicit '#nullable' directive in source.

Possible unintended reference comparison; to get a value comparison, cast the right hand side to type 'string'