Fatal error: Uncaught exception 'Twig_Error_Runtime' with message 'The "Twig_Extension_Core" extension is not enabled.' in /home/kleinmue/public_html/wp-content/themes/kleinmuenchner/core/vendor/twig/twig/lib/Twig/Environment.php:770 Stack trace: #0 /home/kleinmue/public_html/wp-content/plugins/timber-library/lib/Twig.php(223): Twig_Environment->getExtension('Twig_Extension_...') #1 [internal function]: Timber\Twig->add_timber_escapers(Object(Twig_Environment)) #2 /home/kleinmue/public_html/wp-includes/class-wp-hook.php(298): call_user_func_array(Array, Array) #3 /home/kleinmue/public_html/wp-includes/plugin.php(203): WP_Hook->apply_filters(Object(Twig_Environment), Array) #4 /home/kleinmue/public_html/wp-content/plugins/timber-library/lib/Loader.php(166): apply_filters('timber/twig/esc...', Object(Twig_Environment)) #5 /home/kleinmue/public_html/wp-content/plugins/timber-library/lib/Loader.php(66): Timber\Loader->get_twig() #6 /home/kleinmue/public_html/wp-content/plugins/timber-library/lib/Timber.php(286): Timber\Loader in /home/kleinmue/public_html/wp-content/themes/kleinmuenchner/core/vendor/twig/twig/lib/Twig/Environment.php on line 770