I would think this would be better:

exit "Sorry, name can't be empty"
  if $name eq ''
;
[download]

It's not, as per perldoc -f exit

exit EXPR
exit Evaluates EXPR and exits immediately with that value. Example:
...

Your code does exit 0 if $name eq '' which may or may not be what is intended, but what looks like a message being printed - isn't. Try at your shell

perl -e 'exit "foo"'; echo $?
[download]

_($_=" "x(1<<5)."?\n".q·/)Oo.  G°\        /
                              /\_¯/(q    /
----------------------------  \__(m.====·.(_("always off the crowd"))."·
");sub _{s./.($e="'Itrs `mnsgdq Gdbj O`qkdq")=~y/"-y/#-z/;$e.e && print}