Dear BoldGrid support,
on a WordPress website running both W3 Total Cache and UpdraftPlus, the latest backup got filled with a continuous file/directory lookup error regarding your plugin:
PHP event: code E_WARNING: opendir(/usr/www/users/xxxxxxxxx/wp-content/cache/db/options/): Failed to open directory: No such file or directory (line 124, wp-content/plugins/w3-total-cache/Util_File.php)
Despite the errors, the backup seemed to have finished just fine in the end still. All plugins and systems were updated to the latest version prior to the backup task, including the new WordPress 6.0. The cache folder is in the wp-content exclusion list as per default by the UpdraftPlus plugin defined. This error occured for the first time, with my latest backup only.
The folder /wp-content/cache/db/options/ was existing and empty. The file /plugins/w3-total-cache/Util_File.php is existing. I can’t draw any mishaps out of this situation.
I initially introduced this error to the UpdraftPlus support, who directed me to you to check the issue further/in depth and possible solutions on your end.
Thanks for your help!