No information is displayed on my website.

[zhaojinjian0000]

I just modified keys.txt No information by only "Home Projects Blog" is displayed on my website. And mywebsite/login is completely blank.

[zhaojinjian0000]

2021/03/19 18:52:05 [error] 11#11: *2 connect() failed (111: Connection refused) while connecting to upstream, client: xxxxxxxxxxx, server: , request: "GET /theme HTTP/1.1", upstream: "http://127.0.0.1:6000/theme", host: "http://xxxxxxxxxxx:4000", referrer: "http://xxxxxxxxxxx:4000/"