Shiny app produce error on shinyapps.io but runs on local machine

Hi there, I have issues when I publish my shiny app to shinyapps.io.

I'm getting this error.

I suspect it’s because of problems with loading data files but I made sure my paths were all correct.

Here is my code for reference https://github.com/benthecoder/next-word-predictor/tree/main/app

Please help me. Thank you.