Problem with Tamriel trade center .lua

[jahwyat]

I've been using TTC for a while, but today I logged in with an error message. I've reinstalled both TTC and its dependencies twice now, deleted and reinstalled the lua files, relaunched a couple of times just to see if it was a random error. But it keeps coming back and I can't get any pricing for any items, also the client is not logging new listings like it usually does.

It's not allowing me to paste pictures in so:
https://imgur.com/CSDggGy

that is a link to the picture, detailing the error message I'm getting.
Any ideas or advice would be appreciated.
Thank you for taking the time to read!