> I have installed mysql-server but ran into one problem. According to > https://www.digitalocean.com/community/tutorials/how-to-install-linux-apache-mysql-php-lamp-stack-ubuntu-18-04
What do you need this server to do? I recommend installing and setting up what you need as you need it. You may find that LAMP is not the way to go, and even if it is, you will not get so lost if you are following documentation for the specific services you want to run.
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