Not implementing the static getExtendedTypes() method in Exercise\HTMLPurifierBundle\Form\TypeExtension\HTMLPurifierTextTypeExtension when implementing the Symfony\Component\Form\FormTypeExtensionInterface is deprecated since Symfony 4.2. The method will be added to the interface in 5.0.
Hi,
starting with Symfony 4.2 all FormTypes need to implement the
getExtendedTypes
method:https://symfony.com/blog/new-in-symfony-4-2-improved-form-type-extensions
Cheers Matthias