R flexdashboard tabset renders poorly on server



I am using a tabset in my flexdashboard and it isn't coming through when I post to shinyapps.io

The image on the left is how it looks locally and how I want it to look. The image on the right shows how it renders once deployed, header formatting shown, no tabs. Code for this app can be found at the top right corner where it says </>Source Code .
I also have this question posted on StackOverflow
Thanks in advance.


I wonder if there's a pandoc version difference here. Can you try changing ###ggplot to ### ggplot and try again?


You got it, 100%! Thanks, @jcheng