title: Datatable not rendering in shiny
body: <p>I am trying to create a datatable in shiny. This solution has been working previously but I must have altered something for it to not anymore:</p>
  
  <pre><code>output$ltl_tbl &lt;- renderDataTable({
    input$refresh
    ltl_view &lt;- car()
    colnames(ltl_view) &lt;- c('Carrier', 'Volume', 'CWT', 'On Time')
    DT::datatable(ltl_view, 
                  options = list(lengthMenu = c(10, 25, 50), 
                                 pageLength = 10, 
                                 orderClasses = TRUE, 
                                 fillContainer = TRUE, 
                                 searching = FALSE),
                  rownames = FALSE 
    ) %&gt;%
      formatCurrency(3, '$') %&gt;% formatPercentage(4, 0) %&gt;% formatCurrency(2, '', digits= 0)
  })
  </code></pre>
  
  <p>I am just calling a dataframe from a reactive function, changing the column names, then creating the datatable with some options but this is not working and I cannot figure out why. </p>
  
  <p>When I remove the column format (formatCurrency &amp; formatPercentage) and also remove the lines above the actual datatable (e.g., changing column names and dataframe assignment), it will render the datatable in my shinyapp. </p>