So I had an R Shiny dashboard that was running totally fine with no errors or warnings when run locally using RStudio. However, when deployed to a shiny server it was not working at all. The UI would load but I could see the server code was not running at all (I put lots of error logs throughout the code so I could see the server code was not running). Beyond this, there were no errors to the server Shiny logs beyond “Execution halted”.