HTTP 500 error on a fresh update in Install & Upgrade Support Posted September 1, 2017 I had the same issue from 6.1.8 , switching my store to use v5.6 PHP in cpanel sorted it. I had narrowed it down to something with session.class.php . and so copying old version over the top of the 6.1.9 file sorted it. But patch out now to fix.
HTTP 500 error on a fresh update
in Install & Upgrade Support
Posted
I had the same issue from 6.1.8 , switching my store to use v5.6 PHP in cpanel sorted it.
I had narrowed it down to something with session.class.php . and so copying old version over the top of the 6.1.9 file sorted it. But patch out now to fix.