R Shiny中的Google图表无法在Windows上使用Rstudio

Question

我正在努力在R Shiny中运行谷歌排行榜。以下应用程序在我们的本地Shiny Server上运行完美。但是，当我在Windows PC上从R Studio运行相同的代码时，不会显示谷歌图表。任何想法？谢谢！

## app.R ##
library(shiny)
library(shinydashboard)
suppressPackageStartupMessages(library(googleVis))

ui <- dashboardPage(
  dashboardHeader(title = "Basic dashboard"),
  dashboardSidebar(),
  dashboardBody(

    fluidRow(box(htmlOutput("plot", height = 250)))
  )
)

server <- function(input, output) {
  set.seed(122)
  histdata <- rnorm(500)

  output$plot <- renderGvis({ gvisBubbleChart(Fruits, idvar="Fruit", 
                                              xvar="Sales", yvar="Expenses",
                                              colorvar="Year", sizevar="Profit",
                                              options=list(
                                                hAxis='{minValue:75, maxValue:125}')) })

}

shinyApp(ui, server)