Dilawar M. answered 07/15/19
General programming/Data-science/Computer vision Tutor
It is telling the exact thing what the problem is i.e. the file not found. It basically means you are not giving the exact path to R (To tell it exactly the directory path where the file is stored, for example C/folder/my_file.xls )
try using readxl library in R, its very good at handling excel files.