LovelessDesign saidBecause it’s not needed in the dashboard.
Many themes use this. But even if I remove it, it doesn’t work
Whenever you enqueue a plugin in the functions.php, it will be outputted only in the front end. So that function is really useless…
Do you have wp_head() & wp_footer() in your theme? If WordPress is loading jQuery, it loads it in one of these two hooks and if you’re missing them you’re error is obvious…