title: Doctrine generate/migrate command doesn't make tables
body: <p>I am learning <strong>symfony</strong> and wanted to make a login page. So I followed this tutorial -<a href="https://stackoverflow.com/questions/50082673/symfony-4-login-form-with-security-and-database-users">Symfony 4 login form with security and database users</a> exactly the same. </p>
  
  <p>The issue I am having is the <code>doctrine:generate</code> and <code>doctrine:migrate</code> command. </p>
  
  <p>When I run the command, it does not make the tables. When I check the database with <strong>phpmyadmin</strong>, all I see is a <code>migration_versions</code> table and no tables for the entities I created.</p>