Laravel Excel not working with xlsx files

I'm using larave excel to load/import excel files from the frontend(InertiaJS/ReactJS) to my laravel backend. But in my import class I've dd'd the rows but only get null indices. While when I try with a csv file it works fine and I can see the fields in the dd. This is my controller:

    public function importScroll(Request $request): void
    {        
        $file = $request->file('file');
        $file->storeAs('public', $file->getClientOriginalName());
        Excel::import(new ScrollsImport,$file);
    }

this is my import class:

  public function model(array $row)
    {
        dd($row);
        return new BillingScroll([
        ]);
    }