Fatal error: Declaration of Drupal\cheeseburger_menu\Plugin\Block\CheeseburgerMenuBlock::submitConfigurationForm(array &$form, Drupal\Core\Form\FormStateInterface $form_state) must be compatible with Drupal\Core\Block\BlockBase::submitConfigurationForm(array &$form, Drupal\Core\Form\FormStateInterface $form_state): void in /data/6/1/61bcdcb7-8db6-481a-b0bf-b7b805822688/tfrebell.se/web/rku.nu/web/modules/custom/cheeseburger_menu/src/Plugin/Block/CheeseburgerMenuBlock.php on line 335