Error: could not find function "shinyApp"

[Ali Hadjihoseini]

I have tried to run the simple template, as it is explained in tutorial (https://shiny.rstudio.com/tutorial/) but is is not successful ! I have the following error :

library(shiny)
ui <- fluidPage()
server <- function(input,output){}
shinyApp(ui=ui,server=server)
 

Error: could not find function "shinyApp"

Even trying to get help : 

?shinyApp

the answer is :

No documentation for ‘shinyApp’ in specified packages and libraries: 

you could try ‘??shinyApp’

Could somebody help me please ? 

[Dean Attali]

Try replacing the last line with

shiny::shinyApp(ui=ui,server=server)

If you then get a different error, about ui or server not being found, then make sure you run each of the lines starting at the top

[Saeed Abdolahi]

Hi Ali,
firstly try in with

> shiny:: shinyApp(....

as Dean suggests, if errors changed you need to install dependency packages like: "httpuv" and "xtable".