在r Shiny中使用downloadHandler时，有人遇到传单故障吗？

如何解决在r Shiny中使用downloadHandler时，有人遇到传单故障吗？

我不能每次都能正常工作，但是偶尔（足够浪费大量时间进行调试）与downloadHandler（）相同的tabBox中的传单地图在下载csv，rmd等后会“出现故障”有人遇到这个问题吗？它发生在已部署的和本地的，但是间歇性的。我添加了一个reprex，它提供了我要传达的内容的框架。但是，它不会出错，或者我无法通过reprex使其出错。任何想法或帮助将不胜感激。谢谢。

library(shinydashboard)
library(shiny)
library(leaflet)
library(tidyverse)



header = dashboardHeader(title = "Hydroclimatic Data")


# * sidebar ----
sidebar = dashboardSidebar(
  sidebarMenu(
    menuItem(
      "Map",tabName = "map",menuSubItem("Map",icon = icon("chart-line"))
    )
    ))



body = dashboardBody(
  tabItems(
    tabItem(
      tabName = "map",fluidRow(
        tabBox(width = 12,id = "tab",tabPanel("Map",style = "height:92vh;",leafletoutput("swe_maps")),tabPanel("Summary Stats",dataTableOutput("stats"),selectInput("variable","choose a variable",choices = c(unique(names(mtcars)))),downloadButton(outputId = "downLoadFilter",label = "Download Filtered Data")))
    ))))
    
    

# UI ----------------------------------------------------------------------

ui <- dashboardPage(header = header,sidebar = sidebar,body = body)

# Server ------------------------------------------------------------------


server <- function(input,output,session) {
  
  output$swe_maps <- renderLeaflet({
    
    leaflet() %>% addTiles() %>% 
      addMouseCoordinates(epsg = "epsg:4326",proj4string = "+proj=utm +zone=32 +ellps=wgs84 +datum=wgs84 +units=m +no_defs") %>%
      setView(lat = 48.91167,lng = -114.90246,zoom = 10)  
  })
  
  
  mtcars_stat <- reactive({mtcars %>% select(input$variable) %>% summary()})
  
  output$stats = renderDataTable({mtcars_stat() %>% datatable(filter = list(position = 'top')) })
  
  
  
  output$downLoadFilter <- downloadHandler(
    filename = function() {
      paste('filtered_data_',Sys.Date(),'.csv',sep = '')
    },content = function(file){
      write.csv(mtcars,file)
    }
  ) 
    


}

##### RUN APPLICATION #####
shinyApp(ui = ui,server = server)