I am building an R package with the help of Hadley Wickham book. However I encounter an issue while knitting a vignette. I get this error (I rewrote the names of the vignette and function):
"Quitting from lines 208-212 (nameofthevignette.Rmd)
Error in foo(argument1, argument2, argument3 :
"foo" function can not be found
Calls: ... handle -> withCallingHandlers -> withVisible -> eval -> eval
It appears that I have a problem with the "foo" function and that it can not be found. However, it is exported and listed in the NAMESPACE file and the "foo" function works if I run it. The problem appears only when knitting the vignette using it. In this vignette I also call other functions from my package before calling the "foo" function and there is no problem with them.
Do you have any idea of what can cause such an issue?
Thank you for your help!