That is just a standard message and nobody will understand why. Please do what it said and post here:
Code:
systemctl status nginx.service
● nginx.service - The nginx HTTP and reverse proxy server
Loaded: loaded (/etc/systemd/system/nginx.service; enabled; vendor preset: d>
Active: failed (Result: exit-code) since Thu 2021-10-21 20:23:43 IST; 1min 4>
Process: 442440 ExecStart=/usr/sbin/nginx -c /etc/nginx/nginx.conf (code=exit>
Process: 442438 ExecStartPre=/usr/sbin/nginx -t -c /etc/nginx/nginx.conf (cod>
Main PID: 2976 (code=exited, status=0/SUCCESS)
Oct 21 20:23:42 shiv.hostname.org nginx[442440]: nginx: [emerg] bind() to >
Oct 21 20:23:43 shiv.hostname.org nginx[442440]: nginx: [emerg] bind() to >
Oct 21 20:23:43 shiv.hostname.org nginx[442440]: nginx: [emerg] bind() to >
Oct 21 20:23:43 shiv.hostname.org nginx[442440]: nginx: [emerg] bind() to >
Oct 21 20:23:43 shiv.hostname.org nginx[442440]: nginx: [emerg] bind() to >
Oct 21 20:23:43 shiv.hostname.org nginx[442440]: nginx: [emerg] still coul>
Oct 21 20:23:43 shiv.hostname.org nginx[442440]: t:none,t:urlDecode
Oct 21 20:23:43 shiv.hostname.org systemd[1]: nginx.service: Control proce>
Oct 21 20:23:43 shiv.hostname.org systemd[1]: nginx.service: Failed with r>
Oct 21 20:23:43 shiv.hostname.org systemd[1]: Failed to start The nginx HT>