Trouble configuring ssh secret engine (OTP)

I was using the below blog for logging into remote host (Amazon Linux 2 ) via ssh using the OTP generated by vault server (used the ssh secret engine with OTP).

I have configured everything as per the steps provided in the blog but when I am trying to login it is showing this error " Received disconnect from ...** port 22:2: Too many authentication failures Disconnected from ...** port 22".

Can you please help us.

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