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

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

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

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

Support for 'async void' unit tests is being removed from xUnit.net v3. To simplify upgrading, convert the test to 'async Task' instead. (https://xunit.net/xunit.analyzers/rules/xUnit1048)

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

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

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

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