"getVolume()" method is returning "None"

[mukeshguptakc]

Hi,

I am using this library for communicating to the array over web-service/REST APIs.
in a case, when I try to get a volume for knowing its information, i'm not able to get the volume's details.
The data responded to me is "None"

Then I checked at array side & checked using CLI , the volume is present on the Array.

Can someone please let me know what could go wrong? this is really serious problem for me.