Kaltura_Client_Exception thrown

Invalid KS "ODFlZjlmZjVhZGQxNjZmNGNjMzY4ZmQ2MzNlOGFmZWE4MTM4MDJiOXwxMDE7OzE0OTMwMTIwNzM7MjsxNDkyOTI1NjczLjY2NTU7QW5vbnltb3VzO2VkaXQ6Kg==", Error "-1,INVALID_STR"