[Bug]: Import CSV to Database about laravel-excel HOT 3 OPEN

class SubscriberImport implements ToModel, WithHeadingRow, WithCustomCsvSettings
{
    use Importable;

    public function model(array $row)
    {
        if (!isset($row['email'])) {
            return null;
        }
        return new Subscriber([
            "name" => $row['name'],
            "address" => $row['address'],
            "email" => $row['email']
        ]);
    }

    public function batchSize(): int
    {
        return 1000;
    }

    public function uniqueBy()
    {
        return 'email';
    }

    public function getCsvSettings(): array
    {
        return [
            'delimiter' => ',',
            'enclosure' => '"',
            'contiguous' => false,
            'input_encoding' => 'UTF-8',
        ];
    }
}

    public function importReceipient(Request $request)
    {
        $request->validate([
            'file' =>  'required|mimetypes:text/csv,text/plain,application/csv,text/comma-separated-values,text/anytext,application/octet-stream,application/txt'
        ]);
        try {
            (new SubscriberImport)->import($request->file('file'));
            return redirect()->back()->with(["success" => "Subscribers Added"]);
        } catch (Exception $e) {
            return redirect()->back()->with(["error" => "Oops, there was an error."]);
        }
    }