Fatal error: Uncaught Error: Call to undefined method Jetpack_Simple_Payments::is_enabled_jetpack_simple_payments() in /home/koeman/domains/notariskoeman.nl/public_html/wp-content/plugins/jetpack/modules/widgets/simple-payments.php:537 Stack trace: #0 /home/koeman/domains/notariskoeman.nl/public_html/wp-includes/class-wp-hook.php(286): register_widget_jetpack_simple_payments('') #1 /home/koeman/domains/notariskoeman.nl/public_html/wp-includes/class-wp-hook.php(310): WP_Hook->apply_filters(NULL, Array) #2 /home/koeman/domains/notariskoeman.nl/public_html/wp-includes/plugin.php(453): WP_Hook->do_action(Array) #3 /home/koeman/domains/notariskoeman.nl/public_html/wp-includes/widgets.php(1649): do_action('widgets_init') #4 /home/koeman/domains/notariskoeman.nl/public_html/wp-includes/class-wp-hook.php(286): wp_widgets_init('') #5 /home/koeman/domains/notariskoeman.nl/public_html/wp-includes/class-wp-hook.php(310): WP_Hook->apply_filters(NULL, Array) #6 /home/koeman/domains/notariskoeman.nl/public_html/wp-includes/plugin.php(45 in /home/koeman/domains/notariskoeman.nl/public_html/wp-content/plugins/jetpack/modules/widgets/simple-payments.php on line 537