i am using tableCalendar where i have placed my custom widget to display date and detail inside defaultbuilder method of it but it does not showing my custom widget on current date in table

TableCalendar(
      headerVisible: false,
      availableGestures: AvailableGestures.none,
      // daysOfWeekVisible: true,

      focusedDay: DateTime(year, month, 1),
      firstDay: DateTime(year, month, 1),
      lastDay: DateTime(year, month + 1, 0),
      // This will return last day of current month
      startingDayOfWeek: StartingDayOfWeek.monday,
      //availableGestures: AvailableGestures.none,
      daysOfWeekHeight: 40,
      rowHeight: 100,
      calendarBuilders: CalendarBuilders(
        defaultBuilder: (context, day, focusedDay) {
          return DateWidget(
            dateTime: day,
            amount: controller.fetchBalanceByDate(day),
            onTap: () {
              controller.showDateTransactionBottomSheet(day);
            },
            showTitle: false,
          );
        },
      ),
    )