This happens because in newer versions of the OpenSSH client the ssh-rsa key exchange algorithm (specifically the SHA1 signature - more info here) is no longer trusted by default.
If you are using
The Problem
You are using Alacritty terminal and you have logged into a remote host via ssh and when you try to type a command like clear it says this:
'alacritty'
The easiest way to persist ssh keys across different terminal sessions is to use the keychain tool.
Install keychain
Depending on your operating system, the command will vary
Ubuntu and Debian Derivatives
sudo
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