Your script is running before ACF is initialized. More than likely you’re including your script too soon or running it too soon. When are your enqueuing your script? You should probably do this on the
acf/input/admin_enqueue_scripts hook https://www.advancedcustomfields.com/resources/acf-input-admin_enqueue_scripts/
Something not mentioned, but an added precaution is to make your script dependent of “acf-input”
Also ensure that your script does not run until the document is ready.
Welcome to the Advanced Custom Fields community forum.
Browse through ideas, snippets of code, questions and answers between fellow ACF users
Helping others is a great way to earn karma, gain badges and help ACF development!
The most recent ACF Chat Friday featured a live demo of how to register CPTs directly in the plugin, one of our most requested features. Check out the summary below for a replay of the demo, and don’t forget to register for the next session! https://t.co/k2KQ3WWBAz— Advanced Custom Fields (@wp_acf) March 9, 2023
© 2023 Advanced Custom Fields.