I'm trying to edit a new page on a brand new WordPress using Divi Child Theme. WordPress 5.3.2 PHP 7.3.10 MySQL 5.7 server OS: Windows 10 DIVI 4.3.1 Permissions: write access to the website identity on wp-content. This blog is also installed as a subdirectory of a proprietary .Net CMS under /blog. We're able to access the blog and change settings, access and change DIVI settings. When I go to edit any page, I get this console error and the page just keeps spinning without loading the front-end editor. I changed the settings under Divi > Theme Options > Buider > Advanced to use Classic Editor and enabled the latest DIVI builder experience. I still cannot edit on the back or front end of the page. Uncaught ReferenceError: ET_Builder is not defined at Object.<anonymous> (bundle.js?ver=4.3.1:9) at a (bundle.js?ver=4.3.1:2) at Object.<anonymous> (bundle.js?ver=4.3.1:304) at Object.<anonymous> (bundle.js?ver=4.3.1:304) at a (bundle.js?ver=4.3.1:2) at Module.<anonymous> (bundle.js?ver=4.3.1:316) at Module.<anonymous> (bundle.js?ver=4.3.1:316) at a (bundle.js?ver=4.3.1:2) at bundle.js?ver=4.3.1:2 at bundle.js?ver=4.3.1:2 here is what the WP Debug log said under DIVI Support tab. [11-Feb-2020 20:49:24 UTC] .../cache/Directory.php:65 ET_Core_Cache_Directory::_initialize(): Unable to write to filesystem. Please ensure that PHP has write access to one of the following directories: - WP_CONTENT_DIR - wp_upload_dir() - ET_CORE_CACHE_DIR. Has anyone else encountered this weird issue and is this a DIVI problem or our hosting platform? We've tried resaving the permalinks settings, allow full read and write access to the root folder (not just /blog), and even cleared the database to re-install WordPress. I've also tried clearing local and session storage in the browser and doing a hard refresh afterwards.