Kaltura_Client_Exception thrown

Invalid KS "ODFhOGU3MDIxZWFlYzI4NTQ2ODgyYmE1ODdkYmZhZjQ1MzkxOWUwNHwxMDE7OzE0OTg2OTc2NjU7MjsxNDk4NjExMjY1LjAwNDU7QW5vbnltb3VzO2VkaXQ6Kg==", Error "-1,INVALID_STR"