Fatal Error: composer.lock was created for PHP version 7.4 or higher but the current PHP version is 7.3.11

Question

I want to create a Symfony CRUD application. These are the steps I did:

• Downloaded and installed XAMPP from here with PHP 7.3.11 https://www.apachefriends.org/

Answer 1

Kinda late to the party but in my case (Apache server on Ubuntu 18.04), apart from uninstalling previous versions of PHP and installing PHP v.7.4, I had to delete php7.2.conf and php7.2.load from /etc/apache2/mods-available/ for my Symfony project to register that I am indeed on version 7.4. Apparently these files persisted after I purged all previous PHP versions from my system and installed PHP v.7.4.