HI everyone,
I am trying to deploy my Shiny app using shinyapps.io and having trouble deploying it to the server using rsconnect::deployApp. I get the following error message:
" An error has occurred
The application failed to start. Contact the author for more information."
I have found some documentation that indicates it may have to do with where we are pulling the data from (r - Getting an error when trying to publish my shiny app to the server for others to view - Stack Overflow ) but we have another application that uses the same strategy and works fine (sets the working directory to the location of the app.R file and pulls data from the /data folder).
Can someone please provide any insight (happy to share code or other information if helpful)?
Best, Sean
Hi, welcome!
We don't have enough information to help you out, Could you check what your app's logs say?
Hi yes, I was just looking at this (please see below). It seems like it doesn't like a couple of my packages?
2022-05-23T16:17:45.365412+00:00 shinyapps[6224863]: Running on host: 0080208b919d2022-05-23T16:17:45.366995+00:00 shinyapps[6224863]: there is no package called ‘plyr’ 2022-05-23T16:17:45.367123+00:00 shinyapps[6224863]: 'lib = "/opt/R/4.1.1/lib/R/library"' is not writable 2022-05-23T16:17:45.367058+00:00 shinyapps[6224863]: Warning in install.packages(x, dependencies = TRUE) : 2022-05-23T16:17:45.367301+00:00 shinyapps[6224863]: Shiny application exiting ... 2022-05-23T16:17:45.367356+00:00 shinyapps[6224863]: Execution halted 2022-05-23T16:17:45.367186+00:00 shinyapps[6224863]: Error in value[3L] : unable to install packages
Are you including install commands in your code? Can you show the code of your app?
Yes of course, here is the code for the packages:
## First specify the packages of interest
#devtools::install_github("briandconnelly/ggplot2bdc")
packages = c("plyr",
"dplyr",
"ggplot2",
"plotly",
"haven",
"waffle",
"flexdashboard",
"readr",
"shiny",
"shinythemes" ,
"shinydashboard",
"rsconnect",
"ggplot2bdc")
## Now load or install&load all
package.check <- lapply( packages, FUN = function(x) {
if (!require(x, character.only = TRUE)) {
install.packages(x, dependencies = TRUE)
library(x, character.only = TRUE)
}
}
)
That is exactly the problem, you should not include install commands on a shiny app, specially if it is going to be deployed to shinyapps.io .
Great, thank you so much for your help!!
andresrcs
May 27, 2022, 12:28am
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