Error in deploying shiny app: cannot open file, No such file or directory

I've built a shiny app that works perfectly, but I'm not being succesful at deploying it.

When I deploy it to the it returns a message error related to the .csv file I'm using.

My working directory is "C:/Users/F0379/Desktop/Exterior" and I'm importing the file from the same directory:

prop_usd <- read.csv("propostas_usd.csv", header = TRUE, sep = ";", dec = ",")

When I run the app it works, the problem is when I deploy it.

The error message is

Warning in file(file, "rt") : cannot open file './propostas_usd.csv': No such file or directory

It seems something simple to solve, but I got stuck in it.