No such file or directory: An error has occurred

I have all the files that I need in my folder. The folder's name is Shiny File. I have set my working directory to be Shiny File. When I run the app, I can see and interact with the graphs but when publish I get error. The error says: no such file or directory.

I tried checking my r's working directory it is the shiny file yet I still get the error.