Fatal error: Uncaught Error: Call to undefined function create_function() in /customers/d/a/6/firststep-kft.nl/httpd.www/wp-content/plugins/contact-form-7-datepicker/datetimepicker.php:197
Stack trace:
#0 /customers/d/a/6/firststep-kft.nl/httpd.www/wp-content/plugins/contact-form-7-datepicker/datetimepicker.php(169): CF7_DateTimePicker->options_encode()
#1 /customers/d/a/6/firststep-kft.nl/httpd.www/wp-content/plugins/contact-form-7-datepicker/modules/date.php(107): CF7_DateTimePicker->generate_code(false)
#2 /customers/d/a/6/firststep-kft.nl/httpd.www/wp-content/plugins/contact-form-7/includes/form-tags-manager.php(352): ContactForm7Datepicker_Date::shortcode_handler(Object(WPCF7_Shortcode))
#3 /customers/d/a/6/firststep-kft.nl/httpd.www/wp-content/plugins/contact-form-7/includes/form-tags-manager.php(272): WPCF7_FormTagsManager->scan_callback(Array, true)
#4 [internal function]: WPCF7_FormTagsManager->replace_callback(Array)
#5 /customers/d/a/6/firststep-kft.nl/httpd.www/wp-content/plugins/contact-form-7/includes/form-tags-manager.php(187): preg_replace_callback('/(\\[?)\\[(accept...', Array, '
