Kaltura_Client_Exception thrown

Invalid KS "ODlmMDEwMWYzNjNkYjU3N2Y2ZWU3M2U0ZGNmMGRhNzk3ZDA4ZTRjMHwxMDE7OzE0OTMxMDY3MDk7MjsxNDkzMDIwMzA5LjQzNDg7QW5vbnltb3VzO2VkaXQ6Kg==", Error "-1,INVALID_STR"