ot_typo3/ot_templating/ext_localconf.php

<?php

if (!defined('TYPO3_MODE')) {
    die('Access denied.');
}

\FluidTYPO3\Flux\Core::registerProviderExtensionKey('OpenTalent.OtTemplating', 'Page');
\FluidTYPO3\Flux\Core::registerProviderExtensionKey('OpenTalent.OtTemplating', 'Content');