R 闪亮：通过另一台计算机运行代码时出错

Question

I have recently made a R shiny application. Due to broken lap, I needed to run the code in another one but many problems of syntax appear and I don't know how to fix it.

Here is the beginning of my code:

ui <- navbarPage(title ="ESA Data Explorer", theme = shinytheme("united"),
             #### About us Shiny menu #####
             navbarMenu("About us",
                        tabPanel("The lab",
                                 h3(strong("Who are we?")),
                                 h4("We are a multidisciplinary research group of the Université Libre de Bruxelles,
                        which includes biologists, microbiologists,
                           ecological modelers and bioengineers. Our activities focus on the study
                           and modeling of the structure and functioning of aquatic systems 
                           (rivers, lakes, estuaries and coastal waters) and their response to natural
                           and anthropogenic changes. Our methodology involves and combines field observations,
                           process level studies under field and laboratory-controlled conditions and ecological
                           and biogeochemical modeling."),
                                 h3(strong("Our main research domains are:")),
                                 h4("- Coastal eutrophication"),
                                 h4("- Marine biogeochemical cycles and climatic gases"),
                                 h4("- Bacterial ecology of surface waters"),
                                 h4("- Microbiological quality of aquatic
                        ecosystems"),
                                 h4("- Microbiological aspect of drinking water production and distribution"),
                                 h5("More informations about the lab available",
                                    a("here", href = "http://esa.ulb.ac.be/")),
                                 br(),
                                 br(),
                                 br(),
                                 br(),
                                 br(),
                                 br()



                        )))

The error that i receive is :

Error : unexpected symbol in: " br() ui"

When I delete this part to run the next one of the ui function, I get the same message but in a different manner. It is always referred as unexpected symbol in a part of my text while everything looks correct. About the server function, everything is working perfectly. It seems like R can't read correctly this code, maybe due to different encoding, or because R is in a different version, I really don't know. Could you please help me to fix this problem?

Thanks.

Answer 1

You might have the two packages that have

br()

as an option on the new laptop. (use ?br to see if that is the case)

Try to specify which one you are calling via.

shiny::br()

or

htmltools::br()

For your code your would need-

...
shiny::br(),
shiny::br(),
shiny::br()
...(for example)

This usually helps happens to me when I forget to specifity select in dplyr.