我正在尝试以下配置，并且Nginx没有将我的Web请求路由到正确的URL。我在线上尝试了多个建议，但仍然出现错误。

重写代理 〜^ 斜杠

server {
    listen       80 default_server;
    listen       [::]:80 default_server;
    server_name  $ipaddress;
    root         /usr/share/nginx/html;

    # Load configuration files for the default server block.
    include /etc/nginx/default.d/*.conf;

   location /flask {
        proxy_pass http://0.0.0.0:8000/;
        proxy_redirect     off;
        proxy_set_header   Host $host;
        proxy_set_header   X-Real-IP $remote_addr;
        proxy_set_header   X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header   X-Forwarded-Host $server_name;
    }

   location / {
        proxy_pass http://0.0.0.0:8001/;
        proxy_redirect     off;
        proxy_set_header   Host $host;
        proxy_set_header   X-Real-IP $remote_addr;
        proxy_set_header   X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header   X-Forwarded-Host $server_name;
    }



    error_page 404 /404.html;
        location = /40x.html {
    }

    error_page 500 502 503 504 /50x.html;
        location = /50x.html {
    }
}