nginx-cors.conf

location / {

    more_set_headers 'Access-Control-Allow-Origin: $http_origin' 'Access-Control-Allow-Credentials: true';
    
    if ($request_method = 'OPTIONS') {
        add_header 'Access-Control-Max-Age' 1728000;
        add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS, DELETE, PUT';
        add_header 'Access-Control-Allow-Headers' 'Authorization,Content-Type,Accept,Origin,User-Agent,DNT,Cache-Control,X-Mx-ReqToken,Keep-Alive,X-Requested-With,If-Modified-Since';
        add_header 'Content-Length' 0;
        add_header 'Content-Type' 'text/plain charset=UTF-8';
        return 204;
    }
   
     uwsgi_pass flask;
     include /etc/nginx/uwsgi_params;

     }