Nullability of reference types in type of parameter 'value' of 'object BoolToOnlineStatusConverter.Convert(object value, Type targetType, object parameter, CultureInfo culture)' doesn't match implicitly implemented member 'object? IValueConverter.Convert(object? value, Type targetType, object? parameter, CultureInfo culture)' (possibly because of nullability attributes).

The variable 'e' is declared but never used

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.

Possible null reference argument for parameter 'url' in 'Task GameService.DownloadFileAsync(string url, string savePath, IProgress<int>? progress = null)'.

Possible null reference argument for parameter 'path2' in 'string Path.Combine(string path1, string path2)'.

Dereference of a possibly null reference.

Dereference of a possibly null reference.

Dereference of a possibly null reference.

Dereference of a possibly null reference.