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nginx服务返回错误信息

nginx返回错误信息：

An error occurred.
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If you are the system administrator of this resource then you should check the error log for details.

Faithfully yours, nginx.

请查询你服务器的磁盘空间是否满了
使用下命令:df -h
重点关注，磁盘占用率100%的目录
然后删除大文件
下面是命令，>是自己的大文件名称
cat /dev/null > access.log 使用该命令清除大文件