r shiny datatables button option not working.

ndsu.bison.2178

Here's my code below

library(shiny)
library(DT)
library(jsonlite)

shinyApp(
ui = fluidPage(DT::dataTableOutput('tbl')),
server = function(input, output) {
output$tbl = DT::renderDataTable(
iris, extensions = 'Buttons', options = list(
dom = 'Bfrtip',
buttons = c('copy', 'csv', 'excel', 'pdf', 'print')
)
)
}
)

I am getting an error,

Error in FUN: The extension buttonsdoes not exist

allan

Could you link to the page showing the issue please? I'm afraid I know nothing whatsoever about Shiny, so I can't help with that aspect, but I can take a look at the Javascript.

Allan