@sararararara - @Railroader suggested looking at this topic (three days/600 posts ago)... he suggested how the user could find their mistake. From where did you copy your code? You probably also copied the same problem/error. For you to get printing, look at your code for printer.feed(8);
... which should be telling the printer to print "8" line feeds... (edit - I see "feed" is a printer function)
@Railroader - "Latest" ... 3 days (600 posts) ago... found it. But, this forum should be searchable without getting scroll-wheel cramps.