Adjusted Codes for Development

Purpose Driven.
 - vno  no longer is used as a reference to the object number in the array.
  --> vno is now use to checked against the value of video.no , and now retrieve video if match.

Mastery 
- Error if user has no records.
--> implement try catch , if catch err , will default coach to zandar, and path name and path Id to the first element derived from player_progress API.