[INSTALLATION] (unknown directive)

[ynsdl]

I have added bad-referrer-words.conf inside /etc/nginx/conf.d/my.conf like below ;

server {
           
             listen 443 ;
...
        # Bad Bot Blocker
        include /etc/nginx/bots.d/blockbots.conf;
        include /etc/nginx/bots.d/bad-referrer-words.conf;

    location /
..
}

it returns an error ;

nginx: [emerg] unknown directive "~*(?:\b)mb_ereg_replace(?:\b)" in /etc/nginx/bots.d/bad-referrer-words.conf:79 nginx: configuration file /etc/nginx/nginx.conf test failed

Didnt change anything inside bad-referrer-words.conf:

my nginx version ;

nginx version: nginx/1.12.2

conf files;

[@01 conf.d]$ ls -la /etc/nginx/conf.d/
drwxr-xr-x. 2 root root    204 Sep 13 09:03 .
drwxr-xr-x. 6 root root   4096 Sep 13 08:56 ..
-rw-r--r--. 1 root root    684 Sep  8 09:07 balancers.conf
-rw-------. 1 root root   1893 Sep  8 07:52 botblocker-nginx-settings.conf
-rw-------. 1 root root 542111 Sep  8 07:52 globalblacklist.conf
-rw-r--r--. 1 root root   2318 Sep 13 08:57 my.conf

[@01 conf.d]$ ls -la /etc/nginx/bots.d/
drwxr-xr-x. 2 root root  225 Sep 13 08:22 .
drwxr-xr-x. 6 root root 4096 Sep 13 08:56 ..
-rw-------. 1 root root 4809 Sep 13 07:50 bad-referrer-words.conf
-rw-------. 1 root root 5197 Sep  8 07:52 blacklist-ips.conf
-rw-------. 1 root root 3956 Sep  8 07:52 blacklist-user-agents.conf
-rw-------. 1 root root 3623 Sep  8 07:52 blockbots.conf
-rw-------. 1 root root 2971 Sep  8 07:52 custom-bad-referrers.conf
-rw-------. 1 root root 1748 Sep  8 07:52 ddos.conf
-rw-------. 1 root root 2974 Sep  8 07:52 whitelist-domains.conf
-rw-------. 1 root root 2292 Sep  8 07:52 whitelist-ips.conf

[egphp]

same problem