E: Unable to locate package php7.4-…then I was able to solve this with
sudo sh -c 'echo "deb http://ftp.us.debian.org/debian sid main " > /etc/apt/sources.list'and
sudo apt-get update && sudo apt-get upgrade libc6.
mysql: command not foundwas my next error. After
sudo apt install mysql-clientand
sudo apt install mysql-serverwas the new error
ERROR 2002 (HY000): Can't connect to local MySQL server through socket '/var/run/mysqld/mysqld.sock'and no luck with any of these: ubuntu - ERROR 2002 (HY000): Can't connect to local MySQL server through socket '/var/run/mysqld/mysql.sock'
Anyone have any other idea to make it work?