Error connecting to Azure Blob using Shared Access signature

msg 105019, level 16, state 1, line 100  external table access failed due internal error: 'java exception raised on call hdfsbridge_connect. java exception message:  parameters provided connect azure storage account not valid.: error [parameters provided connect azure storage account not valid.] occurred while accessing external file.'    create database scoped credential azurestoragecredential        identity = 'shared access signature',      secret = 'abcdexxxxxxxxxxxxxxxxxxxxxxxxx';      create external data source myazurestorage1 (          type = hadoop,           location = 'wasb://container@mydwblob.blob.core.windows.net/',          credential = azurestoragecredential        );      create external table dbo.myexternaltable(         vendorid varchar(50) null,    )    (            location='/2016/', data_source = myazurestorage1,           file_format = myfileformat,reject_type = value,reject_value = 1000          myfileformat,reject_type = value,reject_value = 1000      ) ; 

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