connect() to unix:/run/gunicorn.sock failed (111: Connection refused) while connecting to upstream, client:

I’m getting the “502 Bad Gateway” error…when I run the command sudo netstat -plant | grep '80\|443' I get the following

tcp        0      0 0.0.0.0:80              0.0.0.0:*               LISTEN      22248/nginx: master 
tcp6       0      0 :::80                   :::*                    LISTEN      22248/nginx: master 

**My ngnix configurations are **

server {
    listen 80;
    server_name MY_IP_ADDRESS;

    location = /favicon.ico { access_log off; log_not_found off; }
    location /static/ {
        root /home/antonnifo/pyapps/FML;
    }
    
    location /media/ {
        root /home/antonnifo/pyapps/FML;    
    }

    location / {
        include proxy_params;
        proxy_pass http://unix:/run/gunicorn.sock;
    }
}

I have no idea what’s up but I have a feeling it has to do with the missing 443…Any help will be highly appreciated