Hello @ayazasif,
When you say “I keep getting errors like this”, where exactly are you getting them? as in, what action triggers them? is this your own custom code or one of the Kaltura interfaces? if your own code, please attach it here, otherwise, please explain exactly what actions are taken to produce the error. Also, is this our SaaS ENV or a self hosted ENV? If self hosted, what version and what errors/exceptions do you see in /opt/kaltura/log/kaltura_api_v3.log?
A general explanation about the metadata services and how to use the different APIs are available here:
and includes link to a step by step tutorial.