Possible null reference return.

Nullability of reference types in value of type 'Task<FluentHttpResponse?>' doesn't match target type 'Task<FluentHttpResponse>'.

Nullability of reference types in value of type 'Task<FluentHttpResponse>' doesn't match target type 'Task<FluentHttpResponse?>'.

Possible null reference argument for parameter 'key' in 'void IDictionary<string, object>.Add(string key, object value)'.

Possible null reference argument for parameter 'value' in 'void IDictionary<string, object>.Add(string key, object value)'.

Nullability of reference types in value of type 'Dictionary<string, object?>' doesn't match target type 'IDictionary<string, object>'.

Possible null reference return.

Possible null reference assignment.

Dereference of a possibly null reference.

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