Pro v4.2.3 - The preview could not load due to the iFrame response being incomplete

Hi, I’m using Pro theme v4.2.3 and I get this error when I try to edit my pages - ‘The preview could not load due to the iFrame response being incomplete’.

I have tried all the recommendations on the Forum with no luck.
I have cleared caches, tried incognito, checked for plugin conflicts, switched to the parent theme etc… but nothing is working.

Is there anything else I could try?

Hello @moira,

Thanks for writing to us.

Thanks for checking the plugin conflict. It might be the issue of version compatibility. Please make sure everything is updated as per our version compatibility page. I would suggest you troubleshoot with a few of the common issues before we investigate your settings.

  1. Testing For Theme Related Issue
  2. Testing For Plugin Conflict
  3. Theme Update
  4. Child Theme
  5. Css/Js Customization
  6. Increasing Php Memory Limit
  7. Disabling Cache
  8. Disabling Cdn
  9. Permalinks
  10. Version Compatibility

If none of those work, It would be best if you could copying your live website to your staging area. and send your details in a secure note so that we can investigate your setting without breaking your live site. Please provide the following details

  • WordPress Login URL
  • Admin level username and password
  • FTP Details

You can find the Secure Note button at the bottom of your posts


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