797:session_start(): ps_files_cleanup_dir: opendir(/tmp/.priv) failed: Permission denied (13)

797:session_start(): Cannot send session cache limiter - headers already sent (output started at /homepages/39/d393447614/htdocs/clickandbuilds/SoccoJvea600797/wp-content/plugins/redi-restaurant-reservation/redi-restaurant-reservation.php:299)