Can't restart nginx with sudo systemctl restart nginx?

Question

Nginx

Hello! I'm trying to make frontend and backend on the same domain, I set up ports and when I do updates sudo systemctl restart nginx
gives an error:

Job for nginx.service failed because the control process exited with error code.
See "systemctl status nginx.service" and "journalctl -xe" for details.

When doing just the backend:

server {
        listen 80;

        server_name project.gq www.project.gq;

      location / {
                proxy_pass http://localhost:3000;
                proxy_http_version 1.1;
                proxy_set_header Upgrade $http_upgrade;
                proxy_set_header Connection 'upgrade';
                proxy_set_header Host $host;
                proxy_cache_bypass $http_upgrade;
      }
}

then everything works, nginx is updated, and when I add the frontend to the port, this way:

server {
        listen 80;

        server_name api.project.gq www.api.project.gq;
        location / {
                proxy_pass http://localhost:3000;
                proxy_http_version 1.1;
                proxy_set_header Upgrade $http_upgrade;
                proxy_set_header Connection 'upgrade';
                proxy_set_header Host $host;
                proxy_cache_bypass $http_upgrade;
      }

}
server {
        listen 80;
        server_name project.gq www.project.gq;
        root /home/project/project-frontend/dist;

}

it throws an error. Help me figure out what I'm doing wrong

Answer 1

Error in the length of the domain, the solution in the comments is in question

Answer 2

sudo nginx -t, then fix the errors that this command will issue.
From experience - the vast majority of problems are from incorrect syntax of configs and all sorts of jambs with permissions to directories.