How to knit a project while there is an error message for a missing library

I encountered issue to knit a project due to an error message like below:

Error in check_for_XQuartz() : 
  X11 library is missing: install XQuartz from xquartz.macosforge.org
Calls: <Anonymous> ... withVisible -> eval -> eval -> View -> check_for_XQuartz
Execution halted

However, I was only uploading a csv file at that line. I am very confused. How do you skip this error message and produce(knit) a html? Please advice. Thank you.

SH.