Cannot assign to 'linkedCancellationTokenSource' because it is a 'using variable'

Cannot assign to 'linkedCancellationTokenSource' because it is a 'using variable'

Process completed with exit code 1.

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.