Error: Undefined class constant 'USER_REGISTER_ADMINISTRATORS_ONLY'

Created by: wallon-ines

Error: Undefined class constant 'USER_REGISTER_ADMINISTRATORS_ONLY' in Drupal\drupalfr_user\Plugin\Menu\MyAccountCreateAccountMenuLink->getTitle() (line 79 of modules/custom/drupalfr_user/src/Plugin/Menu/MyAccountCreateAccountMenuLink.php).