We're (finally) upgrading from 4.2.4 to 4.3.1 but when we do the upgrade it starts the "dotted line" process but always freezes at a certain point. I even wait 30 minutes without it moving. No matter how many times I restart, it always freezes at the same point.
my upgrade.log file's last line is this:
1649906888 - Backing up: /home/customer/www/domain.com/public_html/var/upgrade/upgrade_4.2.4_ultimate-4.3.1_ultimate.tgz/package/app/lib/vendor/ezyang/htmlpurifier/library/HTMLPurifier/ConfigSchema/schema/Core.MaintainLineNumbers.txt in /home/customer/www/domain.com/public_html/var/upgrade/upgrade_4.2.4_ultimate-4.3.1_ultimate.tgz/uc_override.php on line 1833 1649906888 - Backing up: Core.RemoveScriptContents.txt in /home/customer/www/domain.com/public_html/var/upgrade/upgrade_4.2.4_ultimate-4.3.1_ultimate.tgz/uc_override.php on line 1846 1649906888 - Backing up: ValidatorAtom.php in /home/customer/www/domain.com/public_html/var/upgrade/upgrade_4.2.4_ultimate-4.3.1_ultimate.tgz/uc_override.php on line 1846
I've tried clearing the cache, verifying permissions, although it seems the permissions they recommend (777) are no longer possible on servers (can only go 755).
What could be causing this?