shiny issue after app update

[umasaxena]

I updated my shiny app (the first time worked), then started getting the weird filepath error -
To give a little bit of the background. I am reading in rds file where a gene list act as input to search through mongodb database.

Any help is appreciated.

It goes like this;

cc=readRDS("./CC.rds")
gg=readRDS("./GG.rds")
ss=readRDS("./SS.rds")

ui.R

selectizeInput("epiInput","Gene", choices=gg),
selectizeInput("cellInput","Tissue", choices=cc),
selectizeInput("anygene","Any Gene", choices=ss),
helpText("Note: Select gene and cell line tissue of interest"),
actionButton("Search", "search")

Error:

runApp()
Error in readRDS(nsInfoFilePath) : error reading from connection

The backtrace is given below. I just dont know how to correlate the bactrace output to the error to identify where its occuring.

Backtrace

runApp()
Error in readRDS(nsInfoFilePath) : error reading from connection
Backtrace:
x

1. -shiny::runApp()
2. -appParts$onStart()

3. \-shiny:::appObj()
   

4.   \-shiny:::func(fname, ...)
   

5.     \-shiny:::sourceUTF8(fullpath, envir = new.env(parent = globalenv()))
   

6.       \-base::eval(exprs, envir)
   

7.         \-base::eval(exprs, envir)
   

8.           +-shiny::..stacktraceon..(...)
   

9.           +-shiny::fluidPage(...)
   

10.           | +-shiny::bootstrapPage(...)
    

11.           | | +-htmltools::attachDependencies(...)
    

12.           | | \-htmltools::tagList(...)
    

13.           | \-htmltools::div(class = "container-fluid", ...)
    

14.           |   \-tags$div(...)
    

15.           |     \-htmltools::tag("div", list(...))
    

16.           +-shiny::sidebarLayout(...)
    

17.           +-shiny::mainPanel(...)
    

18.           | \-htmltools::div(class = paste0("col-sm-", width), ...)
    

19.           |   \-tags$div(...)
    

20.           |     \-htmltools::tag("div", list(...))
    

21.           +-shiny::tabsetPanel(...)
    

22.           +-shiny::tabPanel("Crispr", dataTableOutput(outputId = "dep_results"))
    

23.           | \-htmltools::div(...)
    

24.           |   \-tags$div(...)
    

25.           |     \-htmltools::tag("div", list(...))
    

26.           \-DT::dataTableOutput(outputId = "dep_results")
    

27.             +-htmltools::attachDependencies(...)
    

28.             \-crosstalk::crosstalkLibs
    

29.               \-base::getExportedValue(pkg, name)
    

30.                 \-base::asNamespace(ns)
    

31.                   \-base::getNamespace(ns)
    

32.                     \-base::tryCatch(loadNamespace(name), error = function(e) stop(e))
    

33.                       \-base:::tryCatchList(expr, classes, parentenv, handlers)
    

34.                         \-base:::tryCatchOne(expr, names, parentenv, handlers[[1L]])
    

35.                           \-value[[3L]](cond)
    

[jcheng5]

It looks to me like the crosstalk library has gotten corrupted somehow. Is it possible you installed crosstalk using an older version of R than you are now running? Can you try uninstalling and reinstalling crosstalk, and see if that helps--either to make the app run or at least to get the backtrace to change?

[umasaxena]

Thanks. It required mainly C libraries update and Rcpp. Crosstalk worked file on clean re-install.