Um, thanks, but as indicated in my original post, that was the first step completed:"...Followed the instructions to manually install the files"Said instructions being located here: https://github.com/osTicket/core-pluginsSaid instructions being:"download the zip file and place the contents into your
include/plugins folder. After cloning, hydrate the repo by downloading the third-party library
dependencies.php make.php hydrate"Following those instructions resulted in the error. I thought this was all pretty clear in my original post, but here it is reiterated. Anyone have any (more useful) suggestions?