PHP Runtime Deprecation Notice: Creation of dynamic property TYPO3\CMS\Frontend\Controller\TypoScriptFrontendController::$altPageTitle is deprecated in /Users/***/typo3/typo3_src-11.5.16/typo3/sysext/core/Classes/Compatibility/PublicPropertyDeprecationTrait.php line 125
<c:titleTag><f:render partial="{index.configuration.partialIdentifier}/Title" arguments="{index: index}"/></c:titleTag>
leads to:
PHP Runtime Deprecation Notice: Creation of dynamic property TYPO3\CMS\Frontend\Controller\TypoScriptFrontendController::$altPageTitle is deprecated in /Users/***/typo3/typo3_src-11.5.16/typo3/sysext/core/Classes/Compatibility/PublicPropertyDeprecationTrait.php line 125