NGINX, Laravel, Laravel WebSocket, angular front configuration

test.project.com

map $http_upgrade $type {
  default "frontend";
  websocket "ws";
}

server {
  listen        443 ssl;
  listen        [::]:443 ssl;
  server_name   test.project.com;
  root /var/www/html/frontend/dist/project-frontend;
  index index.html index.php;

  location /backend {
   alias /var/www/html/project/public;
   try_files $uri $uri/ @backend;
   location ~ \.php$ {
        fastcgi_pass unix:/var/run/php/php7.2-fpm.sock;
        fastcgi_index index.php;
        fastcgi_param SCRIPT_FILENAME $request_filename;
        include fastcgi_params;
   }

  }


  location @backend {
   rewrite /backend/(.*)$ /backend/index.php?/$1 last;
  }


  location / {
    try_files /nonexistent @$type;
    #alias /var/www/html/frontend/dist/project-frontend;
    #index index.html;
    #try_files $uri $uri/ /index.html;
    #try_files $uri $uri/ @frontend;
  }

  location @frontend {
    try_files $uri $uri/ /index.html?$query_string;
  }

    location @ws {
      proxy_pass             http://127.0.0.1:6001;
      proxy_set_header Host  $host;
      proxy_read_timeout     60;
      proxy_connect_timeout  60;
      proxy_redirect         off;

      # Allow the use of websockets
      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;
    }


      ssl_certificate /etc/letsencrypt/live/test.project.com/fullchain.pem; # managed by Certbot
      ssl_certificate_key /etc/letsencrypt/live/test.project.com/privkey.pem; # managed by Certbot
  }