Importing only the heading row using livewire

[Mariusslo]

Hi,

I am trying to make a csv field mapper and I need to parse the Heading row of a csv file. But when I'm trying to do so using this exmaple:

use Maatwebsite\Excel\HeadingRowImport;

class UsersImportController extends Controller 
{
    public function import()
    {
        $headings = (new HeadingRowImport)->toArray('users.xlsx');
    }
}

I keep receiving an exception:
Argument 3 passed to Maatwebsite\Excel\Reader::toArray() must be of the type string, null given, called in /var/www/icecat/vendor/maatwebsite/excel/src/Excel.php on line 162

Can you please assist?

[patrickbrouwers]

You probably have the pass the readerType explicitly. Not sure why, as our tests with the same example pass https://github.com/SpartnerNL/Laravel-Excel/blob/3.1/tests/HeadingRowImportTest.php