In PHP 8.4, declaring functions/methods with parameters containing null as a default value, but without null as one of the types (either as a nullable syntax or as a Union type with null) is deprecated.
https://php.watch/versions/8.4/implicitly-marking-parameter-type-nullabl...
Actual for Drupal core 10.3+, see `core/lib/Drupal/Core/Entity/EntityAccessControlHandler.php`
phpcs --standard=SlevomatCodingStandard --sniffs=SlevomatCodingStandard.TypeHints.NullableTypeForNullDefaultValue
FILE: /app/docroot/modules/contrib/linkchecker/src/LinkCheckerLinkAccessControlHandler.php
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FOUND 1 ERROR AFFECTING 1 LINE
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37 | ERROR | [x] Parameter $items has null default value, but is not marked as nullable.
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PHPCBF CAN FIX THE 1 MARKED SNIFF VIOLATIONS AUTOMATICALLY
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Needs work
2.0
Code
kiseleva.t → changed the visibility of the branch 3519213-php-8.4-fix to hidden.
Issue actual only for current release 2.0.0, in 2.0.x-dev it's already fixed.
Attached patch for that.