Hi Leonid.. unfortunately when I try to perform the upgrade via the update button, the first update to v13 produces the error:

bx_import fatal error: class (BxTemplEditorQuill) wasn't found in utils.inc.php on line 778

and does not proceed any further.

This is why I asked if I could perform manually or via patch files or similar?

Hi Leonid.. just wondering if I can proceed with another method to upgrade since the "bx_import fatal error" stops me from performing the upgrade in the normal way.

I'm accustomed to Linux CLI so if you know of a cli way to manually perform the upgrade, via the patch files or similar, please advise.

I'd imagine the process via the GUI just kicks off scripts on the back end to perform the upgrades from the Git.. so I should be able to do that manually or change my setup to avoid the "bx_import fatal error" prior to upgrade attempts?