In my webpage, when i click "Past or Future" button to display "previous year leave summary or future year leave summary" respectively. It gives the error
"Can't use an undefined value as a HASH reference at LeaveSum.pm line 65."


[CODE=perl]sub leave_init {
($mDBh,$mShortn ame,$mYear) = @_;
my $pToday;
my $pSql;
my ($pPrevYear,$pN extYear);
...