[17-Oct-2022 18:40:13 UTC] PHP Fatal error: Uncaught Error: Class ‘WP_Filesystem_direct’ not found in G:\PleskVhosts[mysiteurlgoeshere\httpdocs\wp-admin\includes\file.php:2003
Not sure if this is the right spot but pulled from debug.log
Im not sure why the class wouldnt be there. BB uses and forces the direct method in WP to read and write to the compiled css and js in your uploads folder. If it wasnt using direct your would need to add your username and password for FTP every time BB wanted to write a file. Perhaps all your permissions are wrong for the uploads folder so WP cant use direct method. Have you considered not using windows to host websites?
You cant set any folder permissions like that if the site is on a windows host. This is why using desktop operating systems for hosting things is problematic.
Just to add, this was working fine on my subdomain (on same host) then I copied the files over to my main domain and that’s when this started occurring. I’m just not sure what “doesn’t transfer” when you copy files via FTP like I did. I’m assuming permissions but could be wrong.