第一次玩阿里云服务器，一开始自己玩了半天，玩的乱七八糟，然后打算重置一下好好玩。
结果重置之后连接不上了，还报了下面这个错误：
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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
SHA256:4ib+zCAy87A3v+n8glp2QYvXLyvOSplVi1da8L0ggn8.
Please contact your system administrator.
Add correct host key in C:\Users\dai'er/.ssh/known_hosts to get rid of this message.
Offending ECDSA key in C:\Users\dai'er/.ssh/known_hosts:6
ECDSA host key for 47.96.237.42 has changed and you have requested strict checking.
Host key verification failed.
解决方案：
找到如下路径和文件：
C:Usersdai'er.sshknown_hosts
将云服务器对应的IP所在行删掉就行了。