I have an error while using icon("fa fa-stack-overflow", "fa-2x") to display stack overflow logo in my Shiny app. The same error also occurs with other icons. However, the icon appears to the application correctly, I just want to get rid of the popup error in the console.
Error message: The name provided ('fa fa-stack-overflow') does not correspond to a known icon.
Try using icon("stack-overflow", "fa-2x") instead.