Fatal error: Uncaught Error: Call to undefined function wp_is_serving_rest_request() in /home/httpd/vhosts/theater-am-gleis.ch/theater-am-gleis.ch/development/src/wp-content/plugins/wordpress-seo/src/integrations/front-end-integration.php:574
Stack trace:
#0 /home/httpd/vhosts/theater-am-gleis.ch/theater-am-gleis.ch/development/src/wp-content/plugins/wordpress-seo/src/integrations/front-end-integration.php(484): Yoast\WP\SEO\Integrations\Front_End_Integration->maybe_remove_title_presenter(Array)
#1 /home/httpd/vhosts/theater-am-gleis.ch/theater-am-gleis.ch/development/src/wp-content/plugins/wordpress-seo/src/integrations/front-end-integration.php(440): Yoast\WP\SEO\Integrations\Front_End_Integration->get_needed_presenters('Static_Home_Pag...')
#2 /home/httpd/vhosts/theater-am-gleis.ch/theater-am-gleis.ch/development/src/wp-content/plugins/wordpress-seo/src/integrations/front-end-integration.php(402): Yoast\WP\SEO\Integrations\Front_End_Integration->get_presenters('Static_Home_Pag...', Object(Yoast\WP\SEO\Context\Meta_Tags_Context))
#3 /home/httpd/vhosts/theater-am-gleis.ch/theater-am-gleis.ch/development/src/wp-includes/class-wp-hook.php(324): Yoast\WP\SEO\Integrations\Front_End_Integration->present_head('')
#4 /home/httpd/vhosts/theater-am-gleis.ch/theater-am-gleis.ch/development/src/wp-includes/class-wp-hook.php(348): WP_Hook->apply_filters('', Array)
#5 /home/httpd/vhosts/theater-am-gleis.ch/theater-am-gleis.ch/development/src/wp-includes/plugin.php(517): WP_Hook->do_action(Array)
#6 /home/httpd/vhosts/theater-am-gleis.ch/theater-am-gleis.ch/development/src/wp-content/plugins/wordpress-seo/src/integrations/front-end-integration.php(389): do_action('wpseo_head')
#7 /home/httpd/vhosts/theater-am-gleis.ch/theater-am-gleis.ch/development/src/wp-includes/class-wp-hook.php(324): Yoast\WP\SEO\Integrations\Front_End_Integration->call_wpseo_head('')
#8 /home/httpd/vhosts/theater-am-gleis.ch/theater-am-gleis.ch/development/src/wp-includes/class-wp-hook.php(348): WP_Hook->apply_filters(NULL, Array)
#9 /home/httpd/vhosts/theater-am-gleis.ch/theater-am-gleis.ch/development/src/wp-includes/plugin.php(517): WP_Hook->do_action(Array)
#10 /home/httpd/vhosts/theater-am-gleis.ch/theater-am-gleis.ch/development/src/wp-includes/general-template.php(3052): do_action('wp_head')
#11 /home/httpd/vhosts/theater-am-gleis.ch/theater-am-gleis.ch/development/src/wp-content/themes/indy-tag/vendor/timber/timber/src/Twig.php(602): wp_head()
#12 /home/httpd/vhosts/theater-am-gleis.ch/theater-am-gleis.ch/development/src/wp-content/themes/indy-tag/vendor/twig/twig/src/Environment.php(361) : eval()'d code(145): Timber\Twig->exec_function('wp_head')
#13 /home/httpd/vhosts/theater-am-gleis.ch/theater-am-gleis.ch/development/src/wp-content/themes/indy-tag/vendor/twig/twig/src/Template.php(394): __TwigTemplate_94999aaf3c18cb89f674a74769b25172->doDisplay(Array, Array)
#14 /home/httpd/vhosts/theater-am-gleis.ch/theater-am-gleis.ch/development/src/wp-content/themes/indy-tag/vendor/twig/twig/src/Template.php(367): Twig\Template->displayWithErrorHandling(Array, Array)
#15 /home/httpd/vhosts/theater-am-gleis.ch/theater-am-gleis.ch/development/src/wp-content/themes/indy-tag/vendor/twig/twig/src/Environment.php(361) : eval()'d code(89): Twig\Template->display(Array)
#16 /home/httpd/vhosts/theater-am-gleis.ch/theater-am-gleis.ch/development/src/wp-content/themes/indy-tag/vendor/twig/twig/src/Template.php(171): __TwigTemplate_eccd990259efd4447f30a8702f42f870->block_html_head_container(Array, Array)
#17 /home/httpd/vhosts/theater-am-gleis.ch/theater-am-gleis.ch/development/src/wp-content/themes/indy-tag/vendor/twig/twig/src/Environment.php(361) : eval()'d code(42): Twig\Template->displayBlock('html_head_conta...', Array, Array)
#18 /home/httpd/vhosts/theater-am-gleis.ch/theater-am-gleis.ch/development/src/wp-content/themes/indy-tag/vendor/twig/twig/src/Template.php(394): __TwigTemplate_eccd990259efd4447f30a8702f42f870->doDisplay(Array, Array)
#19 /home/httpd/vhosts/theater-am-gleis.ch/theater-am-gleis.ch/development/src/wp-content/themes/indy-tag/vendor/twig/twig/src/Template.php(367): Twig\Template->displayWithErrorHandling(Array, Array)
#20 /home/httpd/vhosts/theater-am-gleis.ch/theater-am-gleis.ch/development/src/wp-content/themes/indy-tag/vendor/twig/twig/src/Environment.php(361) : eval()'d code(42): Twig\Template->display(Array, Array)
#21 /home/httpd/vhosts/theater-am-gleis.ch/theater-am-gleis.ch/development/src/wp-content/themes/indy-tag/vendor/twig/twig/src/Template.php(394): __TwigTemplate_22a65c8c8ead915c3fcb9e8ff78d8656->doDisplay(Array, Array)
#22 /home/httpd/vhosts/theater-am-gleis.ch/theater-am-gleis.ch/development/src/wp-content/themes/indy-tag/vendor/twig/twig/src/Template.php(367): Twig\Template->displayWithErrorHandling(Array, Array)
#23 /home/httpd/vhosts/theater-am-gleis.ch/theater-am-gleis.ch/development/src/wp-content/themes/indy-tag/vendor/twig/twig/src/Template.php(379): Twig\Template->display(Array)
#24 /home/httpd/vhosts/theater-am-gleis.ch/theater-am-gleis.ch/development/src/wp-content/themes/indy-tag/vendor/twig/twig/src/TemplateWrapper.php(40): Twig\Template->render(Array, Array)
#25 /home/httpd/vhosts/theater-am-gleis.ch/theater-am-gleis.ch/development/src/wp-content/themes/indy-tag/vendor/timber/timber/src/Loader.php(178): Twig\TemplateWrapper->render(Array)
#26 /home/httpd/vhosts/theater-am-gleis.ch/theater-am-gleis.ch/development/src/wp-content/themes/indy-tag/vendor/timber/timber/src/Timber.php(1442): Timber\Loader->render('front-page.twig', Array, false, 'default')
#27 /home/httpd/vhosts/theater-am-gleis.ch/theater-am-gleis.ch/development/src/wp-content/themes/indy-tag/vendor/timber/timber/src/Timber.php(1579): Timber\Timber::compile(Array, Array, false, 'default', true)
#28 /home/httpd/vhosts/theater-am-gleis.ch/theater-am-gleis.ch/development/src/wp-content/themes/indy-tag/front-page.php(30): Timber\Timber::render(Array, Array)
#29 /home/httpd/vhosts/theater-am-gleis.ch/theater-am-gleis.ch/development/src/wp-includes/template-loader.php(106): include('/home/httpd/vho...')
#30 /home/httpd/vhosts/theater-am-gleis.ch/theater-am-gleis.ch/development/src/wp-blog-header.php(19): require_once('/home/httpd/vho...')
#31 /home/httpd/vhosts/theater-am-gleis.ch/theater-am-gleis.ch/development/src/index.php(17): require('/home/httpd/vho...')
#32 {main}
  thrown in /home/httpd/vhosts/theater-am-gleis.ch/theater-am-gleis.ch/development/src/wp-content/plugins/wordpress-seo/src/integrations/front-end-integration.php on line 574