Error in .jcheck: Java Exception <no description because toString() failed>

[mmoralesIG]

Months ago I had this issue and I fixed it by updating the rJava package.
But now I had to update xlsx and again it's not working, regardless the rJava package

The rest of the message is
.jcall("RJavaTools", "Z", "hasMethod", .jcast(x, "java/lang/Object"), name)new("jobjRef", jobj = <pointer: 0x556275683bd0>, jclass = "java/lang/Throwable")

I need it since I'm using createstyle and other cell format related functions.

My R version is 3.6.3, RTools 3.5, xlsx 0.6.5, rJava 1.0.4

[colearendt]

Hello @mmoralesIG ! I'm sorry to hear about your trouble! Does rJava work? i.e. trying rJava::.jinit()? Can you show a reprex, perhaps?

(EDIT: fixed link)

[mmoralesIG]

Hello @mmoralesIG ! I'm sorry to hear about your trouble! Does rJava work? i.e. trying rJava::.jinit()? Can you show a reprex, perhaps?

(EDIT: fixed link)

Hi! thank you for your speed answer
I got 0

rJava::.jinit()

^{Created on 2021-07-12 by the reprex package (v2.0.0)}

but I'll try it in the application, since in my local works
yep, also 0 in the deployed app

[colearendt]

Perfect! Good to know! That is the expected result. Can you provide a reprex of the code that is causing the broken behavior, perhaps? That would be helpful to understand what is happening.

[mmoralesIG]

Perfect! Good to know! That is the expected result. Can you provide a reprex of the code that is causing the broken behavior, perhaps? That would be helpful to understand what is happening.

The original script is quite long since it's a report (a whole workbook). I made a pretty simple one and this
it's just a download button, it reads a small csv and then write's it into a xlsx.
It's in a small shiny application. (https://inspeccionesglobales.shinyapps.io/cajas_colores/ where it says "descargar tabla")

(and since it's in a application, the reprex doesn't quite work. it downloads fine in my laptop, but not when I deploy)

output$downloadData <- downloadHandler(
    filename = function() {
      paste('test-', Sys.Date(), '.xlsx', sep='')
    },
    content = function(con) {
      df <- read.csv("./data/coordenadas_zonas.csv")
      
      write.xlsx(df,con)
    })

the libraries used
library(shiny)
library(shinydashboard)
library(shinyWidgets)
library(lubridate)
library(tidyr)
library(dplyr)

library(xlsx)

[colearendt]

Thank you for providing this simple example!! Removing layers of complexity to get to the core issue is very helpful 😄 Is it possible to reproduce with a simple / public CSV? That is one that I do not have access to. I'm wondering if something about the language / etc. is causing the trouble on the shinyapps.io environment. Can you print the output of the following locally and in the deployed application? Sharing both here?:

devtools::session_info()

[mmoralesIG]

Thank you for providing this simple example!! Removing layers of complexity to get to the core issue is very helpful 😄 Is it possible to reproduce with a simple / public CSV? That is one that I do not have access to. I'm wondering if something about the language / etc. is causing the trouble on the shinyapps.io environment. Can you print the output of the following locally and in the deployed application? Sharing both here?:

devtools::session_info()

Hi, I modified the dataframe to something simpler: a row with sys.time

output$downloadData <- downloadHandler(
    filename = function() {
      paste('test-', Sys.Date(), '.xlsx', sep='')
    },
    content = function(con) {
      
      df <- data.frame(n=1,"time"=Sys.time() )
      print(devtools::session_info())
      write.xlsx(df,con)
          })

And the shiny.app.logs.txt is the downloaded log of the deployed app, meanwhile the local.session.info is the one from my computer

I really appreciate your help on this

shiny app logs.txt
local session info.txt

[datavisyn-ro-v]

Hello, any solution to this issue? We're suffering from the same problem in 0.6.5 and R 4.1 .

[mmoralesIG]

I switched to the package openxlsx, with minor modifications to existing code.

[colearendt]

I'm working on getting CI set up so we can actually test against R 4.1 a bit better. Apologies for the trouble! If openxlsx works for you, that is a great alternative!