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

Possible null reference argument for parameter 'uriString' in 'Uri.Uri(string uriString)'.

Public method 'UpdateRegisteredSystemReturns200Ok' on test class 'SystemRegisterTests' should be marked as a Fact. Reduce the visibility of the method, or add a Fact attribute to the method. (https://xunit.net/xunit.analyzers/rules/xUnit1013)

Public method 'ApproveSystemUserRequest' on test class 'SystemUserTests' should be marked as a Fact. Reduce the visibility of the method, or add a Fact attribute to the method. (https://xunit.net/xunit.analyzers/rules/xUnit1013)

Cannot convert null literal to non-nullable reference type.

Cannot convert null literal to non-nullable reference type.

Cannot convert null literal to non-nullable reference type.

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

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