Kaltura_Client_Exception thrown

Invalid KS "OGRkYzg1NTA0OTU0MzdkZmEwYTE4NTBhNTNiZjEyMTRiYmZhYTVmM3wxMDE7OzE0OTgyMzcwNzc7MjsxNDk4MTUwNjc3LjgzMjtBbm9ueW1vdXM7ZWRpdDoq", Error "-1,INVALID_STR"