We recently migrated a Bedrock/Sage Multisite from an AWS instance to Kinsta. This site is also using Gutenberg and custom blocks created through Carbon Fields. Everything seemed to be working fine, so we pointed the DNS to the new server. Then we tried updating content, and that’s where the issues appeared, but it’s only happening on 2 of 4 sites in the multisite network.
When we try to edit content, say edit a paragraph or add a new test page, we get an “updating failed” error.
Another issue happening is happening to the Media Library across the sites. When we try to add a PDF file to the Media Library, the file appears, and the file thumbnail appears as normal, but the attachment link goes to a 404 page, even though the file path is the same as another PDF that was added prior to the migration.
Seems to be coming from Bedrock because I copied the site to a staging environment, de-activated all plugins, and switched to the default Twenty Nineteen WP theme, and still had the same “updating failed” issue.
It seemed to be a file permissions error, but Kinsta support is saying that is not the case.
I’m attaching a couple screenshots of the console errors I’m getting. It seems like the editor is not able to talk to the JSON API, but I have no idea why.
Has anyone ran into something like this before?