Downloading pageblob issue

While I try to execute  var downloadInfo = await pageBlob.DownloadAsync(httpRange); Line 273 in GetStarted.cs 
![Image 6-6-22 at 12 49 AM](https://user-images.githubusercontent.com/97528150/172118694-ef0279e8-f85c-4da7-9d58-f2343fc87c27.jpg)
Is this occurring because my Storageaccount is Standard and not premium??