RouterOS部署NginxProxyManager启动报错：a duplicate default server for 0.0.0.0:81 in /etc/nginx/conf.d/production.conf

启动报错：

nginx: [emerg] a duplicate default server for 0.0.0.0:81 in /etc/nginx/conf.d/production.conf:3

参考资料：

https://github.com/NginxProxyManager/nginx-proxy-manager/issues/3174

删除文件：

/etc/nginx/conf.d/dev.conf

重启npm容器，即可。