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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.
怎么处理

提示你有错误不可用啊，然后叫你 check the error log for details. 查看详细日志。
那不用问了，报错肯定要去报错信息，去查看具体日志情况。
日志可以告诉你90%的问题所在。