如图，能正常映射，但访问映射的地址就出错
这是错误日志2024/04/02 17:25:27 [error] 3418#3418: *1 connect() failed (111: Connection refused) while connecting to upstream, client: 127.0.0.1, server: www.zhichibupang.com, request: "GET / HTTP/1.1", upstream: "http://127.0.0.1:8000/", host: "2847-171-88-71-210.ngrok-free.app"
2024/04/02 17:25:27 [error] 3418#3418: *1 connect() failed (111: Connection refused) while connecting to upstream, client: 127.0.0.1, server: www.zhichibupang.com, request: "GET /favicon.ico HTTP/1.1", upstream: "http://127.0.0.1:8000/favicon.ico", host: "2847-171-88-71-210.ngrok-free.app", referrer: "https://2847-171-88-71-210.ngrok-free.app/"
