- πΊπΈUnited States lisa.rae
It appears that the use of
Symfony\Component\HttpKernel\Event\FilterResponseEventwas removed in Drupal 9.0.0, and replaced withSymfony\Component\HttpKernel\Event\ResponseEventin 9.0+.The class,
https://api.drupal.org/api/drupal/core%21lib%21Drupal%21Core%21Http%21KernelEvent.php/class/KernelEvent/9appears to be a port of the Symfony 5.3 KernelEvent, with some added code for forward compatibility with Symfony 6.This class,
Drupal\Core\Http\KernelEvent, was removed from Drupal core with version 10.0.0.Since the code in question in this issue has been deprecated and removed from Drupal Core, I'm going to close this issue as outdated.