Kaltura_Client_Exception thrown

Invalid KS "OGI0N2Q3YzhhYTU3MzFiMTUwMjFiZjAxNGI3ZWUzMzQzMTJiNjA2NHwxMDE7OzE0OTMxODM0Njk7MjsxNDkzMDk3MDY5LjExNjg7QW5vbnltb3VzO2VkaXQ6Kg==", Error "-1,INVALID_STR"