Getting error Class "MicrosoftAzure\Storage\Blob\BlobRestProxy" not found

Hi,

I am trying to create a backup of drupal website on Azure container for which I am using Backup and Migrate: Azure module. But I am getting following error:
Error: Class "MicrosoftAzure\Storage\Blob\BlobRestProxy" not found in Drupal\backup_migrate_azure\Destination\AzureDestination->getClient()

Please help me to resolve this.

Regards,
Saili Jaguste