Kaltura_Client_Exception thrown

Invalid KS "MWFlYWFjMDJiYzQ2MzU0Mjc2OWZkYzU1MGEwNTk4MjI5NGRjZDdhMHwxMDE7OzE0OTMzMTQ4OTA7MjsxNDkzMjI4NDkwLjY2ODc7QW5vbnltb3VzO2VkaXQ6Kg==", Error "-1,INVALID_STR"