Fixing 'alacritty': unknown terminal type. in ssh session
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': unknown terminal type.The Solution
Just change your ssh command to TERM=xterm-256color ssh. That is, add an alias.
Edit your shell's RC file.
ZSH - ~/.zshrc
BASH - ~/.bashrc
alias ssh='TERM=xterm-256color ssh'And source your shell's rc file. 
source ~/.zshrcYou should be all set now