Problem

I checked you site and it seems like there’s plugins assets CSS & Javascripts was not loaded correctly.

https://bmcarmartin.com/wp-content/plugins/contact-form-7/includes/js/index.js

https://bmcarmartin.com/wp-content/plugins/drag-and-drop-multiple-file-upload-contact-form-7/assets/js/codedropz-uploader-min.js

https://bmcarmartin.com/wp-content/plugins/drag-and-drop-multiple-file-upload-contact-form-7/assets/js/dnd-upload-cf7.js

Please Check and try the options below.

1. Check your theme and make sure you have wp_header() in header.php and wp_footer() in footer.php

2. Try to enqueue Jquery, add this snippet in your themes/functions.php file.

function cf7_wp_load_jquery() {
	wp_enqueue_script( 'jquery' );
}
add_action( 'wp_enqueue_scripts', 'cf7_wp_load_jquery' );

3. Check if there’s any cache or optimization plugins that minify or removed the JS file.