Not sure if this is the version you want/need, but there’s a link in the thread below to the Plex version I rolled back to on my QNAP TVS-473 NAS when I had problems with the 1.18 update:
Not sure if this is the version you want/need, but there’s a link in the thread below to the Plex version I rolled back to on my QNAP TVS-473 NAS when I had problems with the 1.18 update: