Fatal error: Uncaught Error: Call to undefined method NewsletterSubscription::get_subscription_form_html5() in /home/dev/demo/katana/wp-content/themes/zk-katana/vc_templates/cms_newsletter.php:7 Stack trace: #0 /home/dev/demo/katana/wp-content/plugins/cmssuperheroes/shortcodes/cms_base.php(22): include() #1 /home/dev/demo/katana/wp-content/plugins/js_composer/include/classes/shortcodes/core/class-wpbakeryshortcode.php(424): CmsShortCode->loadTemplate(Array, '') #2 /home/dev/demo/katana/wp-content/plugins/js_composer/include/classes/shortcodes/core/class-wpbakeryshortcode.php(546): WPBakeryShortCode->content(Array, '') #3 /home/dev/demo/katana/wp-content/plugins/js_composer/include/helpers/helpers.php(1323): WPBakeryShortCode->output(Array, '') #4 /home/dev/demo/katana/wp-includes/shortcodes.php(319): vc_do_shortcode(Array, '', 'cms_newsletter') #5 [internal function]: do_shortcode_tag(Array) #6 /home/dev/demo/katana/wp-includes/shortcodes.php(197): preg_replace_callback('/\\[(\\[?)(cms_ne...', 'do_shortcode_ta...', '[cms_ in /home/dev/demo/katana/wp-content/themes/zk-katana/vc_templates/cms_newsletter.php on line 7