Importer Not Working

    public static function table(Table $table): Table
    {
        return $table
            ->headerActions([
                ImportAction::make()
                    ->importer(MedicalSourceImporter::class)
            ])

#IMPORTER 
class MedicalSourceImporter extends Importer
{
    protected static ?string $model = MedicalSource::class;

    public static function getColumns(): array
    {
        return [
            ImportColumn::make('specialist_id')
                ->numeric()
                ->rules(['integer']),
            ImportColumn::make('type')
                ->relationship(),
            ImportColumn::make('name')
          ->rules(['max:255']),
// etc ... etc ... 
          ImportColumn::make('discounts.xrays')
                ->label(__('xrays_discount'))
                ->rules(['max:100']),
            ImportColumn::make('discounts.pathology')
                ->label(__('pathology'))
                ->rules(['max:100']),
            ImportColumn::make('discounts.local')
                ->label(__('local'))
                ->rules(['max:100']),

    public function handleRecordCreation(MedicalSource $medicalSource, array $record): void
    {
        $discountData = [
            'statement' => $record['statement'],
            'surgical' => $record['surgical'],
            'emergency' => $record['emergency'],
            'labs' => $record['labs'],
            'xrays' => $record['xrays'],
            'internal' => $record['internal'],
            'other' => $record['other'],
            'pathology' => $record['pathology'],
            'local' => $record['local'],
            'imported' => $record['imported'],
            'cosmetic' => $record['cosmetic'],
        ];

        $medicalSource->discounts->create($discountData);
    }