Validate that userId is not null or empty when adding categoryUser SUP-5976
Validate that userId is not null or empty when adding categoryUser
SUP-5976

doubleshot/server,kaltura/server,kaltura/server,doubleshot/server,doubleshot/server,DBezemer/server,kaltura/server,kaltura/server,DBezemer/server,DBezemer/server,kaltura/server,DBezemer/server,kaltura/server,doubleshot/server,DBezemer/server,doubleshot/server,doubleshot/server,DBezemer/server,DBezemer/server,doubleshot/server,DBezemer/server,doubleshot/server