Argument of type 'Type?[]' cannot be used for parameter 'typeArguments' of type 'Type[]' in 'Type Type.MakeGenericType(params Type[] typeArguments)' due to differences in the nullability of reference types.

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

Possible null reference return.

Possible null reference assignment.

Non-nullable field '_valueConverter' must contain a non-null value when exiting constructor. Consider declaring the field as nullable.

Possible null reference return.

Non-nullable property 'CompanyName' must contain a non-null value when exiting constructor. Consider declaring the property as nullable.

Non-nullable property 'Ticker' must contain a non-null value when exiting constructor. Consider declaring the property as nullable.

Non-nullable property 'Price' must contain a non-null value when exiting constructor. Consider declaring the property as nullable.