按照老师的配置，把50x.html也一同放到了resources目录下，但是请求http://miaoshaserver/resources/getotp.html时，页面没有跳转，通过查看nginx的logs/error.log，有如下报错：

2019/07/18 15:04:20 [error] 26891#0: *65 open() "/usr/local/openresty/nginx/html/50x.html" failed (2: No such file or directory), client: 36.110.87.173, server: localhost, request: "POST /user/getotp HTTP/1.1", upstream: "http://172.26.xx.xx:8080/user/getotp", host: "miaoshaserver", referrer: "http://miaoshaserver/resources/getotp.html"

按照提示，把50x.html放到了/usr/local/openresty/nginx/html目录下，能正常跳转
问下老师，这个50x.html必须要放到/usr/local/openresty/nginx/html目录下吗？怎么配置到其它目录下？