Warning: Error in exists: invalid first argument

[SenseMaster]

Bug appears when I running my app on AWS with:

• shiny+rstudio
• https tuned by the instruction from: https://www.r-bloggers.com/installing-rstudio-shiny-server-on-aws/
• ssl tuned by the instruction from: https://www.r-bloggers.com/shiny-https-securing-shiny-open-source-with-ssl/
• password on shiny server tuned by instruction: https://www.r-bloggers.com/password-protect-shiny-apps/

SESSIONINFO:

R version 3.3.1 (2016-06-21)
Platform: x86_64-pc-linux-gnu (64-bit)
Running under: Ubuntu 16.04.1 LTS

locale:
[1] LC_CTYPE=en_US.UTF-8 LC_NUMERIC=C LC_TIME=en_US.UTF-8 LC_COLLATE=en_US.UTF-8 LC_MONETARY=en_US.UTF-8
[6] LC_MESSAGES=en_US.UTF-8 LC_PAPER=en_US.UTF-8 LC_NAME=C LC_ADDRESS=C LC_TELEPHONE=C
[11] LC_MEASUREMENT=en_US.UTF-8 LC_IDENTIFICATION=C

attached base packages:
[1] stats graphics grDevices utils datasets methods base

other attached packages:
[1] shinydashboard_0.5.2 shinyjs_0.7 shiny_0.14

loaded via a namespace (and not attached):
[1] R6_2.1.3 htmltools_0.3.5 tools_3.3.1 Rcpp_0.12.7 jsonlite_1.1 digest_0.6.10 xtable_1.8-2 httpuv_1.3.3 miniUI_0.1.1
[10] mime_0.5

How to reproduce:

1. Create ui.R with this content (https://rstudio.github.io/shinydashboard/structure.html#dynamic-content-1):

library(shiny)
library(shinydashboard)
shinyUI(dashboardPage(
dashboardHeader(title = "Dynamic sidebar"),
dashboardSidebar(
sidebarMenuOutput("menu")
),
dashboardBody()
)
)

1. Create server.R with this content (https://rstudio.github.io/shinydashboard/structure.html#dynamic-content-1):

library(shiny)
library(shinyjs)
library(shinydashboard)
shinyServer(function(input, output, session) {
output$menu = renderMenu({
sidebarMenu(
menuItem("Menu item", icon = icon("calendar"))
)
})
}
)

1. Create new script with runApp() function with a correct way to the app.
2. Run the app from the rstudio-server environment.
   (permissions to project files 777)

See the error:

Listening on http://127.0.0.1:3339
Warning: Error in exists: invalid first argument
Stack trace (innermost first):
84: exists
83: self$exists
82: oldInputs$available
81: shiny::restoreInput
80: sidebarMenu
79: renderMenu [/home/rstudio/test/server.R#7]
78: func
77: origRenderFunc
76: output$menu
1: runApp

If I run app directly from server ( \srv\test ) then

[wch]

Sorry about that. I've just fixed it. You can install the development version with:

if (!requireNamespace('devtools'))
  install.packages('devtools')
devtools::install_github('rstudio/shinydashboard')

I'll try to release an updated version of shinydashboard to CRAN shortly.

[wch]

This is related to rstudio/shiny#1382.

[wch]

The new version is on CRAN now, though it will take some time for it to propagate to mirrors, and for various binary packages to be built.

[SenseMaster]

Thank you!