The <<>> operator doesn't take arguments. It only makes sense for the magical processing of STDIN and @ARGV files, not for an explicitly given file handle.
لսႽ† ᥲᥒ⚪⟊Ⴙᘓᖇ Ꮅᘓᖇ⎱ Ⴙᥲ𝇋ƙᘓᖇ
Comment on Re^2: Answer: Better ways to make multi-line comments in Perl?