tabName missing in beautify-css

[dmenne]

This error comes up when compiling. I don't fully understand it, because there is no error when I manually enter the offending code.

Quitting from lines 2161-2163 (outstanding-shiny-ui.Rmd) 
Fehler in tabPanel("test") : Argument "tabName" fehlt (ohne Standardwert)
Ruft auf: local ... withVisible -> eval -> eval -> navbarPage -> tabPanel
Ausf hrung angehalten


in beautify-css

as.character(navbarPage(tabPanel("test")))
as.character(tabsetPanel(tabPanel("test")))