i also have similar problem after updating AMP plugin.
I cannot access wordpress admin but also the site too.
error is below;
Fatal error: Cannot make static method AMP_Customizer_Design_Settings::register_customizer_ui() non static in class AMPFORWP_Customizer_Design_Contols in /home/nomadindo/trend-news-to-you.com/public_html/wp-content/plugins/accelerated-mobile-pages/templates/customizer/customizer.php on line 0
please tell solution and strongly hope fix it soon.
