Failed to fetch http://deb.debian.org/debian/pool/main/

when trying to install some new package on your WSL system you might face this error:

 Failed to fetch http://deb.debian.org/debian/pool/main/...

to fix this, easily clean and update apt-get

WINLNX01:~/AWS$ sudo apt-get clean all

WINLNX01:~/AWS$ sudo apt-get update

then retry installing your package