错误：
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@ WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED! @
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IT IS POSSIBLE THAT SOMEONE IS DOING SOMETHING NASTY!
Someone could be eavesdropping on you right now (man-in-the-middle attack)!
It is also possible that a host key has just been changed.
The fingerprint for the ECDSA key sent by the remote host is
Please contact your system administrator.
Add correct host key in /Users/你的电脑名称/.ssh/known_hosts to get rid of this message.
Offending ECDSA key in /Users/你的电脑名称/.ssh/known_hosts:5
ECDSA host key for 你的IP地址 has changed and you have requested strict checking.
Host key verification failed.
错误原因：
远程主机标志已更改，之前 ssh 连接的时候输入过 yes，服务器主机信息保存在 .ssh\known_hosts 文件里面，更改之后需要手动删除这条记录
解决方法：
Add correct host key in /Users/你的电脑名称/.ssh/known_hosts to get rid of this message.
Offending ECDSA key in /Users/你的电脑名称/.ssh/known_hosts:5
根据提示已经显示了文件所在的路径，复制打开就行，错误行在 .ssh/known_hosts 的第五行，那么就把第五行附近服务器相关的信息全部删除保存即可解决
