When I activate ACF PRO I get this warning to upgrade database http://image.prntscr.com/image/dcb0807371d64bb69fa88322cba66582.png
After that I get successfull message saying everything went ok http://image.prntscr.com/image/b07ce254cfb04314a24b541e23ff6612.png but whatever page I visit after in admin I always get this message for upgrading database.
Everything else seems working fine, I have latest WordPress version
I have just tried it again and I have looked into console, the error is
Failed to load resource: the server responded with a status of 500 (Internal Server Error) http://localhost/site/wp-admin/admin-ajax.php
Theme is Twenty fourteen, all plugins are deactivated
It’s possible that your server doesn’t have the resource to do the upgrade process. The 500 Internal Server Error is a very general HTTP status code that means something has gone wrong on the web site’s server, but the server could not be more specific on what the exact problem is.
Could you please check your error log and see if there are error messages? The error logs usually have detailed information regarding the issue. If you don’t know where to find the error log, kindly get in touch with your hosting provider.
My database upgrade is not starting really, I see in the console there are two instances of
Uncaught TypeError :
Uncaught TypeError: acf.Model is not a constructor
index.php?page=acf-upgrade:307 Uncaught TypeError: acf.doAction is not a function