DateTime型のカラムにCarbonを代入するとPHPStanlエラーになる

[isanasan]

下記のPHPStanエラーを未然に防ぐためにCake\I18n\FrozenTime|nullのtypehintをDateTimeInterfaceにしたい。

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  Line   OrganizationInvoiceGroup.php
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  18     Property App\Model\Baked\Entity\OrganizationInvoiceGroup::$deleted (Cake\I18n\FrozenTime|null) does not accept Carbon\CarbonImmutable.
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