I have an image i\'d like to embed into my shiny app, and have read as much as I can find on how to do it. Although, all I get is a blue question mark when I run my code.
After coming back to this problem, I found that the solution is to simply format the Shiny code properly, by naming the R file app.R, and clicking Run App as opposed to selecting all of the code and running within the console.
Not sure how or why this makes a difference, but the numerous Shiny applications I have worked on since have all been resolved when doing this.