The error is the same every time I've tried, which is:
PHP Fatal error: Declaration of Magento\PageBuilder\Model\Dom\NodeList::item($index) : ?Magento\PageBuilder\Model\Dom\Adapter\ElementInterface must be compatible with Magento\PageBuilder\Model\Dom\Adapter\NodeListInterface::item(int $index): ?Magento\PageBuilder\Model\Dom\Adapter\ElementInterface in vendor/magento/module-page-builder/Model/Dom/NodeList.php on line 19
from Active questions tagged magento-enterprise - Magento Stack Exchange