Possible null reference argument for parameter 'source' in 'ChatMessage? Enumerable.LastOrDefault<ChatMessage>(IEnumerable<ChatMessage> source)'.

The variable 'ex' is declared but never used

Dereference of a possibly null reference.

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

Dereference of a possibly null reference.

Dereference of a possibly null reference.

Dereference of a possibly null reference.

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

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