Premature end of file reached at valid.pl line 5

Bad object reference '' at valid.pl line 5
Bad object reference '' at valid.pl line 5
Bad object reference '' at valid.pl line 5
Use of uninitialized value in concatenation (.) or string at valid.pl line 9.
Use of uninitialized value in concatenation (.) or string at valid.pl line 9.
1.6