For me nothing appears related to the G HUB.
UPDATE: I got this to work. I first tested on my laptop where I have never installed GHUB and it worked in two seconds and was super simple. So something about the GHUB install wrecks havoc on this plugin.
So on my main pc that was getting the haptic error even in the FFB plugin 64 bit mame folder test program, nothing I did helped regardless of if I uninstalled everything GHUB and Logitech related, regardless of if I disabled and uninstalled all logitech drivers in device manager, and regardless of if I dropped the G29 wheel in bluetooth windows 10 screen and rebooted 5 times. Nothing helped get rid of the "GHUB" text in the ffb test plugin dropdown box (it was the correct text except just had "GHUB" in the text guid when it should not have).
What I ended up having to do is go to the registry and do a find for "G HUB" and "GHUB" without quotes and deleting everything related to it (make sure to backup your registry and be VERY careful doing this since you could mess things up). Then I uninstalled all Logitech programs via add/remove programs if there were any and then I unplugged the G29 usb, rebooted, reinstalled the Logitech Gaming Software, rebooted when it prompted after the install, and then finally after the pc started back up, I re-inserted the usb for the G29 and going into the ffb plugin test program finally works. I tried all the options I found online to remove GHUB and nothing worked besides this so not sure what I was doing wrong but yeah.