Table filters field validation

Tables\Filters\Filter::make('subscription_end')
    ->schema([
        Fieldset::make(__('Subscription ends'))
            ->columns(2)
            ->schema([
                Forms\Components\DatePicker::make('start')
                    ->label(__('From'))
                    ->requiredWith('end')
                    ->before('end'),
                Forms\Components\DatePicker::make('end')
                    ->label(__('To'))
                    ->requiredWith('start')
                    ->after('start'),
                ]),
           ])
           ->query(function (Builder $query, array $data, Set $set): Builder {
               if (blank($data['start'] ?? null) || blank($data['end'] ?? null)) {
                   return $query;
               }

               return $query->whereBetween('subscription_end', [
                   $data['start'],
                   $data['end'],
               ]);
          })
          ->indicateUsing(function (array $data) {
              if (blank($data['start'] ?? null) || blank($data['end'] ?? null)) {
                  return null;
              }

              return Carbon::parse($data['start'])->format('d-m-Y') . ' - ' . Carbon::parse($data['end'])->format('d-m-Y');
         })