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

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

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

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

Non-nullable property 'Base64Content' must contain a non-null value when exiting constructor. Consider declaring the property as nullable.

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

Non-nullable property 'Base64Content' must contain a non-null value when exiting constructor. Consider declaring the property as nullable.

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

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