Kaltura_Client_Exception thrown

Invalid KS "NmM3YjQ2MGViYmRmY2M1NTU3M2I0ZWY4ZWE5ODdiZmExNzc2YWU1ZHwxMDE7OzE0NzUwMTAzMzI7MjsxNDc0OTIzOTMyLjUwNTg7QW5vbnltb3VzO2VkaXQ6Kg==", Error "-1,INVALID_STR"