Possible null reference argument for parameter 'path' in 'DirectoryInfo Directory.CreateDirectory(string path)'.

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

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

Possible null reference argument for parameter 'page' in 'PageIterator<Chat, ChatCollectionResponse> PageIterator<Chat, ChatCollectionResponse>.CreatePageIterator(IBaseClient client, ChatCollectionResponse page, Func<Chat, Task<bool>> asyncCallback, Func<RequestInformation, RequestInformation> requestConfigurator = null, Dictionary<string, ParsableFactory<IParsable>> errorMapping = null)'.

Dereference of a possibly null reference.

Possible null reference argument for parameter 'input' in 'string KnowledgeCollectorBase.StripHTML(string input)'.

This async method lacks 'await' operators and will run synchronously. Consider using the 'await' operator to await non-blocking API calls, or 'await Task.Run(...)' to do CPU-bound work on a background thread.

This async method lacks 'await' operators and will run synchronously. Consider using the 'await' operator to await non-blocking API calls, or 'await Task.Run(...)' to do CPU-bound work on a background thread.

Dereference of a possibly null reference.