having an issue with signs addon, author isn't responding at all

this is the script giving me issues right here https://www.gmodstore.com/scripts/view/1977 here are 2 screenshots of exactly what I'm seeing in game and in console: https://imgur.com/a/7mxjf https://imgur.com/a/2U2Qf

I've tried contacting the author through support ticket(twice, to try and make sure it sends another email incase he is intentionally ignoring all his tickets), I tried contacting him on steam(twice, first time was telling him that the addon was disabled and I needed support. second time simply needing support)

well I'm tired of waiting on the dude to fix his addon so I'm making this thread in hopes that somebody will do his job for him