I get the above error message when trying to edit certain pages (but not others, even when the content / page structure is very similar).
Thanks for writing in!
I have checked the page and there is an error 403:
app.6f62d0f.js:2 Frame missing CORNERSTONE_FRAME signature. This could mean WordPress did not shutdown properly or this URL could be cached even though Cache Control headers are present. (anonymous) @ app.6f62d0f.js:2 Promise.then (async) (anonymous) @ app.6f62d0f.js:2 Bh @ react-dom.min.js?ver=16.13.1:126 Dj @ react-dom.min.js?ver=16.13.1:162 unstable_runWithPriority @ react.min.js?ver=16.13.1:25 Da @ react-dom.min.js?ver=16.13.1:60 xb @ react-dom.min.js?ver=16.13.1:162 (anonymous) @ react-dom.min.js?ver=16.13.1:162 U @ react.min.js?ver=16.13.1:16 B.port1.onmessage @ react.min.js?ver=16.13.1:24 app.6f62d0f.js:2 POST https://yourdomain.com/homework/ 403 (Forbidden)
Please enable your debug mode to check for the errors:
It could also be caused by a plugin conflict, amongst other things. Please check out this troubleshooting article here and follow the instructions for the following sections (where appropriate):
- Testing For Theme Related Issue
- Testing For Plugin Conflict
- Increasing Php Memory Limit
- Disabling Cache
- Disabling Cdn
- Version Compatibility