Don’t forget to configure your environment variables.

Also, set the port, running something like options(shiny.port = 8080).

app.R

# shinyapp
library(shiny)
library(auth0)

ui <- fluidPage(logoutButton())

server <- function(input, output, session) { }
shinyAppAuth0(ui, server)

_auth0.yml

name: myApp
remote_url: ''
auth0_config:
  api_url: !expr paste0('https://', Sys.getenv("AUTH0_USER"), '.auth0.com')
  credentials:
    key: !expr Sys.getenv("AUTH0_KEY")
    secret: !expr Sys.getenv("AUTH0_SECRET")