I have spoken with my hosting company about the updates –
PHP Upload max filesize is now 32MB and PHP post max size is now 64MB.
The server PHP version is 7.3.7. The MySQL version, however, is only 5.5.46-cll-lve. WordPress recommends MySQL 5.6 or higher, but that official requirement page does state that WordPress will function with older versions (MySQL 5.0+).
I requested that the MySQL version be upgraded, but was told that is not possible given that the current version of MySQL on the server is the highest version currently supported by the site’s control panel, Plesk.
Are you able to give me any other information about the error happening with Cornerstone? And is there any indication that the MySQL version is what’s causing the problem?
Also, can you take a look at what’s happening when a “Page” is edited in cornerstone - I will include an example link below. The preview is blank with gray boxes, no images or text populated.
Thanks.