nginx - 服务 nginx 配置测试：nginx

Question

配置时出现此错误：

sudo service nginx configtest  
nginx: [emerg] "if" directive is not allowed here in /usr/local/nginx/conf/nginx.conf:106
nginx: configuration file /usr/local/nginx/conf/nginx.conf test failed

当我使用 SSL 打开域时，出现错误：

 504 Gateway Time-out