src/Rule/Trait/SkipOnEmptyTrait.php:44:16: MixedInferredReturnType: Could not verify return type 'bool|callable|null' for Yiisoft\Validator\Rule\Trait\SkipOnEmptyTrait::getSkipOnEmpty (see https://psalm.dev/047)

src/Rule/Trait/WhenTrait.php:49:22: MixedReturnTypeCoercion: The declared return type 'Closure(mixed, Yiisoft\Validator\ValidationContext):bool|null' for Yiisoft\Validator\Rule\Trait\WhenTrait::getWhen is more specific than the inferred return type 'Closure|null' (see https://psalm.dev/197)