On a plesk server got the below apache error in the error logs:

Address already in use: make_sock: could not bind to address [::]:443 no listening sockets available, shutting down

First we will find which process is using the port, the command is:

root@server# /usr/sbin/lsof -i | grep http

Once you get the PID of the process kill that PID and restart apache server.

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