datatable - r shiny data table sometimes does not display -

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i encountered weird situation made me confused , searched while seems no same issues mine data table package.

i used basic default data table in shiny app, see example:

server.r

 library(shiny)  library(dt)  shinyserver(function(input, output) {   output$expense_table_check<-renderdatatable({    iris  }) })

ui.r

library(shiny) shinyui(fluidpage( mainpanel(       navlistpanel(        tabpanel("dt",h1("dt"),        datatableoutput("expense_table_check"))    )   )  )  )

sometimes above works fine not. tried replacing datatableoutput("expense_table_check") datatableoutput('expense_table_check') , works sometimes, sometime not.

i tried replacing output name expense_table_check expense_table_check2. still cannot solve issue. suggestion or comment appreciated.

i solved issues after revising code following , works time; add dt:: in front of datatable:

server.r

 library(shiny)  library(dt)  shinyserver(function(input, output) {   output$expense_table_check <- dt::renderdatatable({    iris  }) })

ui.r

library(shiny) shinyui(fluidpage( mainpanel(       navlistpanel(        tabpanel("dt",h1("dt"),        dt::datatableoutput("expense_table_check"))    )   )  )  )

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