Shinyapp with tidyverse and vroom packages not deployed on shiny-server

Hi all,
I would like to deploy shiny app on shiny-server.

what I did

  1. After installing the server I can connect to it on port 8787 and see the sample-apps on port 3838.
  2. I can also copy the sample app hello to /srv/shiny-server/, change it and deploy successfully

how it fails

However my own application fails during loading:

An error has occurred

The application failed to start.

The application exited during initialization

Packages

I initialaize the packages in the app as:

library(shiny)
library(tidyverse)
library(vroom)

what is wrong?

I suspect the packages vroom and tidyverse to be the culprits as commenting them out ( together with commeenting out the server part of the code) results in app (the ui part) loading.

Confusingly:

  1. The app runs when started from Rstudio or Rstudio-server.
  2. The app runs on shinyapps.io

What am I missing?

I see most people use renv to manage packages for shiny-apps which leads me to suspect that packages installed in Rstudio-server are not available to the shiny-server?

Thank you for your help.

Vladimir
The Curious Mechanobiologist