[Resolved] Repeatable fields stuck "Loading"

[Author]

Posts

[Mykola Yabchenko]

I am trying to: After updating WordPress to 5.0 and updating toolset plugins to latest version I see in my admin area when adding new custom post (or trying to edit existing) I see that my repeatable field says "Loading" and never loads.
There are some errors in the console

Link to a page where the issue can be seen:
hidden link

PS Site is in UKrainian. And after installing Duplicator package please delete Really Simple SSL plugin folder and recaptcha folder in order to load site normally

[Christian Cox]

Hi, please clear your browser cache, log out and log back in. Then try again. If the problem is not resolved, temporarily activate a default theme like Twenty Nineteen and deactivate all plugins except Types. Test again. If the problem is resolved, reactivate your theme and other plugins one by one until the problem returns. If the problem is not resolved, let me know and I will take a look at your Duplicator package.

[Mykola Yabchenko]

Dear Christian,
It seems to be theme related issue. I have even updated theme (which is not included in the package I gave you) - and the issue still exists.
THe only thing which seems to be resolving this "Loading" issue is switching to PHP7 but I am not sure that I am ready to switch to PHP7

[Christian Cox]

Error 404 when trying to download the Duplicator package. Can you check the sharing settings?

[Mykola Yabchenko]

Sorry, I have new package. How can I post a private link?

[Christian Cox]

I have enabled a private reply field here. You can share a download link for new package.

[Shane]

Hello,

Christian is currently on Holiday at the moment and won't be available until Thursday.

Thank you for the patience.

[Christian Cox]

Hi, I have downloaded and installed the Duplicator package. I updated WordPress to the latest version, then updated all Toolset plugins to the latest version. Then I tested with PHP 5.6.38 and PHP 7.2.8, and I was unable to replicate the problem. I tested with the child theme and the parent theme, but the RFGs loaded as expected during all tests. Can you turn on server logs to see if there is a backend error? Go in your wp-config.php file and look for

define('WP_DEBUG', false);

Change it to:

define('WP_DEBUG', true);

Then add these lines, just before it says 'stop editing here':

ini_set('log_errors',TRUE);
ini_set('error_reporting', E_ALL);
ini_set('error_log', dirname(__FILE__) . '/error_log.txt');

Reload the post editor page in wp-admin. If any backend errors are thrown, this will create an error_log.txt file in your site's root directory. Please send me its contents. Once that is done, you can revert the changes you made to wp-config.php.

[Mykola Yabchenko]

Thanks, Christian!
I confirm that everything works now. Appreciate your help!