The preview could not load due to iframe response Message

[Tim845]

Hi there -

We have a page on our website which when viewed in Cornerstone displays the message “The preview could not load due to iframe response being incomplete. This is most often related to a plugin conflict, or customizations introducing the PHP error.”

I searched the forum and do see a few posts similar to this issue. To resolve the issue I checked all the elements the page uses in Cornerstone and didn’t see anything unusual.

Before I go through the process of deactivating plugins and test to find a conflict is there anything that could be causing it?

This page is rather old and has not been updated since Feb 2018. It does use the default template which other pages use. This error appears only on this page.

We are using X Version: 9.1.4 . Cornerstone is Version 6.1.4

Thanks
Tim

[prakash_s]

Hello Tim,

Thanks for writing to us.

It might be the issue of cache or plugin conflict issue, 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
• Exact Page URL
• FTP Details

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

Thanks