why “OK” the “Current Status:”

why “OK” the “Current Status:” on the nagios webgui?

>>>>
Current Status: OK (for 0d 3h 58m 35s)
Status Information: WARNING – Online: 1 – Offline: 1
Performance Data: AP=2 Online=1 Offline=1;0;1;;

the query is correct:

/usr/bin/php ./check_unifi.php -H 192.168.25.15 -u admin -p ********- -P 8443 -s -m ap -w 0 -c 1

WARNING – Online: 1 – Offline: 1 | AP=2 Online=1 Offline=1;0;1;;