chmod: cannot access 'file' : No such file or directory error when the file exists

I downloaded and saved 2 files on **Linux tails live os**. I have set the appropriate permissions on those 2 files to allow them as executable. This is the command I used. sudo chmod 777 home/amnesia/Desktop/file sudo chmod 777 file However, when I try to access these 2 files, both the files yield me an error as **cannot access**. I am not sure why it isn't recognizing the file permissions correctly.