The variable 'ex' is declared but never used

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

'SKPaint.TextSize' is obsolete: 'Use SKFont.Size instead.'

'SKPaint.Typeface' is obsolete: 'Use SKFont.Typeface instead.'

'SKPaint.TextAlign' is obsolete: 'Use SKTextAlign method overloads instead.'

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

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

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

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