Vandutch Center St. Maarten

Fatal error: Uncaught Error: Call to undefined function gravity_form() in /home/dh_7wbqz9/vandutch.com/wp-content/themes/wordpress-bootstrap-master-child/content-center.php:457 Stack trace: #0 /home/dh_7wbqz9/vandutch.com/wp-includes/template.php(690): require() #1 /home/dh_7wbqz9/vandutch.com/wp-includes/template.php(647): load_template('/home/dh_7wbqz9...', false) #2 /home/dh_7wbqz9/vandutch.com/wp-includes/general-template.php(167): locate_template(Array, true, false) #3 /home/dh_7wbqz9/vandutch.com/wp-content/themes/wordpress-bootstrap-master-child/single.php(46): get_template_part('content-center', '') #4 /home/dh_7wbqz9/vandutch.com/wp-includes/template-loader.php(74): include('/home/dh_7wbqz9...') #5 /home/dh_7wbqz9/vandutch.com/wp-blog-header.php(19): require_once('/home/dh_7wbqz9...') #6 /home/dh_7wbqz9/vandutch.com/index.php(17): require('/home/dh_7wbqz9...') #7 {main} thrown in /home/dh_7wbqz9/vandutch.com/wp-content/themes/wordpress-bootstrap-master-child/content-center.php on line 457