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

Dereference of a possibly null reference.

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

Non-nullable property 'PrivateKey' must contain a non-null value when exiting constructor. Consider adding the 'required' modifier or declaring the property as nullable.

Non-nullable property 'Username' must contain a non-null value when exiting constructor. Consider adding the 'required' modifier or declaring the property as nullable.

Non-nullable property 'Machine' must contain a non-null value when exiting constructor. Consider adding the 'required' modifier or declaring the property as nullable.

The variable 'ex' is declared but never used

The annotation for nullable reference types should only be used in code within a '#nullable' annotations context.

The variable 'ex' is declared but never used