服务器输出 r shiny 显示尝试应用非功能错误

Question

我创建了一个闪亮的应用程序，如下所示

 library(shiny)
 library(shinydashboard)
 library(shinydashboardPlus)
 ui <- dashboardPage(
 dashboardHeader(title = "Visualization tool", titleWidth = "250"),
 dashboardSidebar(width = '250', fluidRow(
 div(numericInput(inputId = "ID", label = "ID1", value = 0, min = 0, max = 
 1000)))),
 dashboardBody(
 fluidRow(column(7,textOutput(outputId = "Table2")))))
 server <- function(input, output) {   
 output$Table2=renderText({
 value=input$ID()
 return(value)
 })}


 shinyApp(ui, server)

该应用在侧边栏中有一个输入框，生成的数字应呈现在主面板上。 Hoewevr，我收到以下错误

 attempt to apply non-function

我找不到问题。请求某人检查并提出解决方案

Answer 1

我发现了错误

   server <- function(input, output) {   
   output$Table2=renderText({
   value=input$ID
   return(value)
    })}