PHP MAILER Warning: trim() expects parameter 1 to be string - php

Question

am using phpmailer to send mail, which is sending mail but i keep getting this error, any help is appreciated,
Warning: trim() expects parameter 1 to be string, object given in
........../mail/class.phpmailer.php on line
773
Warning: trim() expects parameter 1 to be string, object given in
........../mail/class.phpmailer.php on line
773
Warning: trim() expects parameter 1 to be string, object given in
........../mail/class.phpmailer.php on line
773
here is line 771 downwards
771 protected function addOrEnqueueAnAddress($kind, $address, $name)
772 {
773 $address = trim($address);
774 $name = trim(preg_replace('/[\r\n]+/', '', $name)); //Strip breaks and trim
775 if (($pos = strrpos($address, '#')) === false) {
776 // At-sign is misssing.
777 $error_message = $this->lang('invalid_address') . " (addAnAddress $kind): $address";
778 $this->setError($error_message);
779 $this->edebug($error_message);
780 if ($this->exceptions) {
781 throw new phpmailerException($error_message);
782 }
783 return false;
784 }