Cornerstone preview not working (Pro 2.0)

[mennobouma]

Hi X’ers,

I’m running Pro 2.0 on a multisite and Cornerstone isn’t loading the preview properly. Domains are mapped with the Domain Mapping plugin from WPMUDEV. Using W3 Total Cache for caching. This is from the Google console:

Object { error: true, message: “Xfr request made by preview timed out”, ts: “ts15200156080461”, params: {…}, … }

Object { state: {…}, intent: {…}, router: {…}, data: {}, resolvedModels: {…}, queryParams: {}, promise: {…}, error: undefined, params: {…}, handlerInfos: […], … }
cs.js:617:9
TypeError: stack is undefined
[Meer info]
cs-vendor.js:19456:1
Fout bij brontoewijzing: request failed with status 404
Bron-URL: https://www.sitename.nl/wp-content/themes/pro/cornerstone/assets/dist-app/css/cs.css?ver=3.0.0
Brontoewijzings-URL: cs.css.map
[Meer info]
Fout bij brontoewijzing: request failed with status 404
Bron-URL: https://www.sitename.nl/wp-content/themes/pro/cornerstone/assets/dist-app/js/cs.js?ver=3.0.0
Brontoewijzings-URL: cs.map
[Meer info]
Fout bij brontoewijzing: request failed with status 404
Bron-URL: https://www.sitename.nl/wp-content/themes/pro/cornerstone/assets/dist-app/js/cs-vendor.js?ver=3.0.0
Brontoewijzings-URL: cs-vendor.map

Any idea how to solve this?

Thanks,
Menno

[alexander]

Hey there,

Would you mind providing us with login credentials so we can take a closer look? Please provide following information:

Set it as Secure Note

• Link to your site
• WordPress Admin username / password
• FTP credentials

All the best!

[mennobouma]

Hi Alexander,

Thanks for your response, just added a secure note.

Cheers, Menno

[mldarshana]

Hi There,

Upon checking, I see that your memory is set to 256MB, could you please try adding the following code into your wp-config.php file.

define( 'WP_MEMORY_LIMIT', '512M' );
define( 'WP_MAX_MEMORY_LIMIT', '512M' );

You can add it before the line:

/*That's all, stop editing! Happy Blogging. */

Also I see that you’re using the latest version of PHP which is v7.2.2. If possible try switching to v7.1.x to avoid incompatibility issues.

Thanks!

[mennobouma]

Hi Mldashana,

Thanks. I added the lines and switched back to PHP 7.1. The preview is showing but i takes very long… We’re running on a VPS. Also sometimes only the header and footer are loading and the content is missing in the preview…

[mennobouma]

Also get this message often:

[alexander]

Hi there,

I’ve checked your site and I’ve not encountered any of the errors you’ve mentioned. I tried a handful of pages on both the main and sub site. Have you cleared the cache recently? That could have make it start working again after an update.

[mennobouma]

Hi Alexander,

On the child site i get these errors:

cs-vendor.js?ver=3.0.1:19456 Uncaught TypeError: Cannot read property ‘indexOf’ of undefined

Uncaught ReferenceError: ajaxurl is not defined

Also Cornerstone loads the page, then reloads and takes 24 seconds (!).

[alexander]

Hi again,

I’ve tried performing some more actions on your child site. I’ve tried editing existing pages, creating a test page, performing different actions in the builder, saving, and re-loading. I’ve still not encountered the issues you’re describing (including the increased load time)

I believe this could be related to the cache being stale. Another idea is that you could try testing for a plugin conflict. You can do this by deactivating all third party plugins, and seeing if the problem remains. This includes network activated plugins. If it’s fixed, you’ll know a plugin caused the problem, and you can narrow down which one by reactivating them one at a time.