Uncaught Error: Syntax error, unrecognized expression: [href=#] in ordpress

To temporarily solution
Until your theme developers release a fixed version,
you can add the following code snippet into your theme functions.php file

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add_action( 'wp_enqueue_scripts', 'load_old_jquery', 100 );
function load_old_jquery() {
if ( ! is_admin() ) {
wp_deregister_script( 'jquery' );
wp_register_script( 'jquery', ( "//ajax.googleapis.com/ajax/libs/jquery/1.11.3/jquery.min.js" ), false, '1.11.3' );
wp_enqueue_script( 'jquery' );
}
}