# [Known Issues] Lightning 导入报错 http status code != 200, message 404 page not found

## Key Words

Lightning, cannot read schema from remote, http status code != 200, https_proxy, 404 page not found

## Description

lightning 导入报错，在 lightning.log 日志中存在报错日志

[ERROR] [main.go:90] ["tidb lightning encountered error stack info"] [error="cannot read schema 'xxx' from remote: get <http://xx.xx.xx.xx:10080/schema/xxxx> http status code != 200, message 404 page not found\n"]

## Root Cause

配置了变量 http_proxy ，lightning 导入了 http_proxy 变量指定的位置，由于无法访问，报错。

## Diagnostic Steps

1. 查看 lightning.log 日志，存在 http_proxy 或 https_proxy 变量信息
2. 查看服务器信息确认变量值 echo $http_proxy echo $https_proxy

## Resolution

N/A

## Workaround

执行移除变量 http_proxy 命令 unset https_proxy

## Affect Version

N/A