Home › Forums › Backend Issues (wp-admin) › Uncaught TypeError: Cannot read property 'length' of undefined › Reply To: Uncaught TypeError: Cannot read property 'length' of undefined
Thanks for the bug report, however, I’m not sure why you are experiencing a core JS error when ACF is activated.
Have you tried swapping to a default WP theme to make sure the issue does not come from a conflict there?
Also, can you confirm that all other plugins are disabled when you see this error or are there still a few activated?
I only ask because this is the first occurrence of this issue, so I believe it will be specific to your install.
Thanks
E
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!
We use cookies to offer you a better browsing experience, analyze site traffic and personalize content. Read about how we use cookies and how you can control them in our Privacy Policy. If you continue to use this site, you consent to our use of cookies.