Use of uninitialized value $element in string eq at XMLGrouper_tr1.pl line 37.
Use of uninitialized value $element in string eq at XMLGrouper_tr1.pl line 45.
Use of uninitialized value $element in string eq at XMLGrouper_tr1.pl line 47.
Use of uninitialized value $element in string eq at XMLGrouper_tr1.pl line 49.