It looks to me like you’re trying to utilize jQuery in custom code, but haven’t actually enqueue’d the jQuery script – This line gives it away (I think?):
ReferenceError: jQuery is not defined
if you are using wp_enqueue_script to bring in a custom .js file, make sure you set jquery as a dependancy
wp_enqueue_script( 'my-script', get_stylesheet_directory_uri() . '/js/myfile.js', array( 'jquery' ) );
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