You needed to change the ATTACKER_IP placeholder with the IP you wanted to check, did you do that?
I just found that PHP-FPM is returning this error message
[14-Jan-2020 11:37:45] WARNING: [pool www] server reached pm.max_children setting (5), consider raising it
Could you please increase the max_children parameter in your instance's configuration?
Please remember to restart all the services after modifying the files
sudo /opt/bitnami/ctlscript.sh restart