Install php-symfony-polyfill by entering the following commands in the terminal:
sudo apt update sudo apt install php-symfony-polyfill
Description:
Symfony polyfills backporting features to lower PHP versions
The Symfony Polyfill project backports features found in the latest PHP versions and provides compatibility layers for some extensions and functions. It is intended to be used when portability across PHP versions and extensions is desired. . Symfony is a PHP framework, a set of tools and a development methodology.
Homepage: https://symfony.com
Version: 1.6.0-2
Section: universe/php