I am having the same issue. Has there been a resolution for this posted yet?
Yep. Same boat
ours are on wpengine as well
When I try to edit with cornerstone I get this error: There has been a critical error on this website.
I can confirm this is also happening on several other sites I need to edit today for clients. Please advise.
Same on all our sites as well. Please, please please fix it soon. Starting to get some angry customer calls now.
Me too, all my websites are getting the same message… need urgent solution…
Same here on all our websites.
Panic mode ON!
Same here on my sites
Same for us!
Same here! We need a patch real quick 
Found this solution on the FB-page. It worked.
$items = json_decode( wp_remote_retrieve_body( $request ), true );
$items = array_filter( $items, function( $item ) {
Add a null check between those two lines:
$items = json_decode( wp_remote_retrieve_body( $request ), true );
if (!is_array($items)) return [];
$items = array_filter( $items, function( $item ) {
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Same here!
Use this as a temp fix
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I can confirm this fix has worked for me too. I’m surprised Theme Co have’t weighed in on this after 3 hours? Not even a quick message to say they are aware of the issue and are trying to resolve it?
Experiencing the same issue here! ThemCo - get on it please!
We’ve fixed the issue with our demo server and will be taking actions for this to never happen again. Have a great day.
i’m still having the issue though.
Can’t edit anything. Get the critical error as soon as i try to open Cornerstone
In the Cornerstone settings, try clearing the cache if you are having issues still.
