Use of uninitialized value $line in scalar chomp at H:/summenpruefung.pl line 549, <$FH> line 16991.
Use of uninitialized value $line in pattern match (m//) at H:/summenpruefung.pl line 550, <$FH> line 16991.
Use of uninitialized value $line in pattern match (m//) at H:/summenpruefung.pl line 542, <$FH> line 16991.