The type or namespace name 'AngleSharp' could not be found (are you missing a using directive or an assembly reference?)

The type or namespace name 'AngleSharp' could not be found (are you missing a using directive or an assembly reference?)

Process completed with exit code 1.

'AceEditorOptions.UseSoftTabs' hides inherited member 'AceSessionOptions.UseSoftTabs'. Use the new keyword if hiding was intended.

'AgentMessageStreamUpdate.AuthorName' hides inherited member 'StreamingChatMessageContent.AuthorName'. Use the new keyword if hiding was intended.

Cannot convert null literal to non-nullable reference type.

Possible null reference argument for parameter 'item' in 'void ChatHistory.Add(ChatMessageContent item)'.

Possible null reference argument for parameter 'item' in 'void List<ChatMessageContent>.Add(ChatMessageContent item)'.

Possible null reference argument for parameter 'input' in 'string InteractiveStreamingAgent.EnsurePattern(string input)'.

Possible null reference argument for parameter 'item' in 'int List<ChatAgent>.IndexOf(ChatAgent item)'.

Possible null reference argument for parameter 'json' in 'IntentTransition? JsonSerializer.Deserialize<IntentTransition>(string json, JsonSerializerOptions? options = null)'.

Dereference of a possibly null reference.