Updating to 5.5 has worked fine on all sites but one.
First off, this doesn’t look right “The authenticity of wordpress-5.5.zip could not be verified as no signature was found.” Anyhow…
When running the upgrade, class-wp-filesystem-direct.php chgrp() results in “Operation not permitted”.
After a page refresh I get Fatal error: Uncaught Error: Call to undefined function wp_unregister_GLOBALS() in /home/85797-66975.cloudwaysapps.com/ynfpwfgeny/public_html/wp-settings.php:70, which of course might be caused by a partial upgrade.
I reverted to a backup and performed Reset File / Folders permissions from the console for the server user.
Same chmod error.
I reverted to a backup again and changed permissions to 777 for files and folders via SSH.
Same problem again.
ls -l gives group = www-data and owner = [server user]
Anyone that knows of a workaround?
Thanks in advance.