TYPO3 Core

Hi upgraded to new 11.5 and trying PHP 8. Get FE exception warning about undefined array key when loading any FE page.

at TYPO3\CMS\Core\Error\ErrorHandler->handleError(2, 'Undefined array key "defer"', '/home/<snipped>/public_html/typo3/sysext/core/Classes/Page/PageRenderer.php', 2213)
in /home/<snipped>/public_html/typo3/sysext/core/Classes/Page/PageRenderer.php line 2213

foreach ($this->jsLibs as $properties) {
                $properties['file'] = $this->getStreamlinedFileName($properties['file']);
                $type = $properties['type'] ? ' type="' . htmlspecialchars($properties['type']) . '"' : '';
                $async = $properties['async'] ? ' async="async"' : '';
  line 2213     $defer = $properties['defer'] ? ' defer="defer"' : '';
                $nomodule = $properties['nomodule'] ? ' nomodule="nomodule"' : '';
                $integrity = $properties['integrity'] ? ' integrity="' . htmlspecialchars($properties['integrity']) . '"' : '';
                $crossorigin = $properties['crossorigin'] ? ' crossorigin="' . htmlspecialchars($properties['crossorigin']) . '"' : '';
                $tag = '<script src="' . htmlspecialchars($properties['file']) . '"' . $type . $async . $defer . $integrity . $crossorigin