Shiny App crashes with local package on shinyapps.io

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1

Hi RStudio Community,

when trying to deploy a shiny app to shinyapps I am using a private Github repo simonskok/IBSignals, but shinyapps has access to it with devtools::install_github("simonskok/IBSignals", auth_token = "****************************************") - everything works fine locally, but the app crashes online with exit error status 1). Below is the output of rsconnect::showLogs():

2022-07-20T16:52:57.099616+00:00 shinyapps[6668965]: Downloading GitHub repo simonskok/IBSignals@HEAD
2022-07-20T16:52:57.099539+00:00 shinyapps[6668965]:
2022-07-20T16:52:57.099484+00:00 shinyapps[6668965]: intersect, setdiff, setequal, union
2022-07-20T16:52:58.097913+00:00 shinyapps[6668965]: * checking for file ‘/tmp/RtmppoTKYh/remotes1c677c892c/simonskok-IBSignals-d1b7cb6b452dd67b662ed9ce36cbc486c30ad815/DESCRIPTION’ ... OK
2022-07-20T16:52:58.097959+00:00 shinyapps[6668965]: * preparing ‘IBOptionsSignals’:
2022-07-20T16:52:58.097846+00:00 shinyapps[6668965]:
2022-07-20T16:52:58.098005+00:00 shinyapps[6668965]: * checking DESCRIPTION meta-information ... OK
2022-07-20T16:52:58.098142+00:00 shinyapps[6668965]: Omitted ‘LazyData’ from DESCRIPTION
2022-07-20T16:52:58.098099+00:00 shinyapps[6668965]: * checking for empty or unneeded directories
2022-07-20T16:52:58.098052+00:00 shinyapps[6668965]: * checking for LF line-endings in source and make files and shell scripts
2022-07-20T16:52:58.098228+00:00 shinyapps[6668965]: WARNING: Added dependency on R >= 3.5.0 because serialized objects in
2022-07-20T16:52:58.098269+00:00 shinyapps[6668965]: serialize/load version 3 cannot be read in older versions of R.
2022-07-20T16:52:58.098188+00:00 shinyapps[6668965]: NB: this package now depends on R (>= 3.5.0)
2022-07-20T16:52:58.098357+00:00 shinyapps[6668965]: ‘IBOptionsSignals/inst/extdata/OANDA_Data/EU_Assets.RData’
2022-07-20T16:52:58.098316+00:00 shinyapps[6668965]: File(s) containing such objects:
2022-07-20T16:52:58.098392+00:00 shinyapps[6668965]: * building ‘IBOptionsSignals_0.1.0.tar.gz’
2022-07-20T16:53:01.101200+00:00 shinyapps[6668965]:
2022-07-20T16:53:01.101259+00:00 shinyapps[6668965]: Warning in i.p(...) :
2022-07-20T16:53:01.101562+00:00 shinyapps[6668965]: Execution halted
2022-07-20T16:53:01.101607+00:00 shinyapps[6668965]: Shiny application exiting ...
2022-07-20T16:53:01.101359+00:00 shinyapps[6668965]: Error in value[3L] :
2022-07-20T16:53:01.101400+00:00 shinyapps[6668965]: Failed to install 'IBOptionsSignals' from GitHub:
2022-07-20T16:53:01.101454+00:00 shinyapps[6668965]: unable to install packages
2022-07-20T16:53:01.101511+00:00 shinyapps[6668965]: Calls: local ... tryCatch -> tryCatchList -> tryCatchOne ->
2022-07-20T16:53:01.101307+00:00 shinyapps[6668965]: 'lib = "/opt/R/4.1.2/lib/R/library"' is not writable

What does this mean or how can I correct that: 'lib = "/opt/R/4.1.2/lib/R/library"' is not writable?

Output of rsconnect::appDependencies() shows all other dependencies are from CRAN.

2

I guess you need to add a writable libPath on app or session start e.g. via .libPaths(c(tempdir(), .libPaths()))

Please see my related answer here:

1 Like
3

Thank you for your answer, it removes the error message, however the problem remains that it does load the package when opening the app, so I can not use the functions from it. What must I include in the call library(IBOptionsSignals), so that shinyapp will recognise the package location?

4

Putting the following in global.R should make it work:

.libPaths(c(tempdir(), .libPaths()))
devtools::install_github("simonskok/IBOptionsSignals", auth_token = "****************************************") 
library(IBOptionsSignals)
5

After following your suggestion the problem remains (Time_Since_US_Market_Open_Close is a function from my local package, the first one used in the shiny app)...below is a section of the output of rsconnect::showLogs()

2022-07-26T10:28:09.308324+00:00 shinyapps[6668965]: Shiny application starting ...
2022-07-26T10:28:09.308391+00:00 shinyapps[6668965]: could not find function "Time_Since_US_Market_Open_Close"
2022-07-26T10:28:09.308356+00:00 shinyapps[6668965]: Error in value[3L] :
2022-07-26T10:28:09.308425+00:00 shinyapps[6668965]: Calls: local ... tryCatch -> tryCatchList -> tryCatchOne ->

What else could I try to load the package at the start of the shinyapp?

6

It seems like you are calling that function before the library is loaded (library(IBOptionsSignals)).

7

But the global.R looks like that:

.libPaths(c(tempdir(), .libPaths()))

suppressMessages(library(shinytoastr))

devtools::install_github("simonskok/IBOptionsSignals", auth_token = "***********************************")

library(IBOptionsSignals)

I assume global.R is run before the app.R, so by that time functions should already be available or not?

8

Using global.R requires a two-file shiny app (ui.R and server.R) it can't be used along with app.R.

When deploying a single-file shiny app (using app.R) just copy the global code above (or outside) the ui and server function.

Please check the following articles:

https://shiny.rstudio.com/articles/two-file.html

https://shiny.rstudio.com/articles/scoping.html

9

I really appreciate your help, we just be so close to the solution, but now after inserting the code back into the app.R the logs say:

2022-07-26T12:32:21.484823+00:00 shinyapps[6668965]: Shiny application exiting ...
2022-07-26T12:32:21.484649+00:00 shinyapps[6668965]: * DONE (IBOptionsSignals)
2022-07-26T12:32:21.484735+00:00 shinyapps[6668965]: Calls: local ... tryCatch -> tryCatchList -> tryCatchOne ->
2022-07-26T12:32:21.484696+00:00 shinyapps[6668965]: Error in value[3L] : could not find function "%!>(MISSING)%!"(MISSING)
2022-07-26T12:32:21.484778+00:00 shinyapps[6668965]: Execution halted

What is this "%!>(MISSING)%!"(MISSING)?
Otherwise, locally the app workes without an issue.

10

Solved, now the problem is

Error in value[3L] : missing value where TRUE/FALSE needed.

Any idea how I can find out what is causing that as it is not a function?

"%!>(MISSING)%!"(MISSING) was because of the pipe operator from magrittr/dplyr package not being loaded.

11

is often caused by a input$something being NULL on session start and used in an if-statement - this usually can be avoided by placing req(input$something) above that if.