I meant to share the following yesterday, but mistakenly posted it somewhere else
I believe this suggests there is a line in your shiny app where you refer directly to the path to your csv file on your local machine. But this won't work once your app is deployed off your local machine.
If that is the issue, there are several options to deal with it, one easy way is to move all data your shiny app needs into a /data folder, that's a subdirectory of your shiny-app directory, and deploy that with your shinyapp.
In your code where your app loads this data, refer to the relative location, probably something like /data/jeop3column.csv.
Some discussion here