Laravel Import Excel into DB: ErrorException Undefined array key "name" - laravel

Question

I am trying to use the Maatwebsite\Excel package to let users import a csv or excel file and it get imported into the DB.
I am new to laravel, so I am not quite sure how to troubleshoot this issue.
I keep getting the error:
ErrorException Undefined array key "FIRST"
http://127.0.0.1:8000/import-form
CSV Sample Data
FIRST,LAST,EMAIL,PHONE,DEPARTMENT,LOCATION
test name 1,teast last 1,test#mail.com,123-123-1231,test department,test location
Routes:
Route::post('/import-form', [ImportPatientController::class, 'importForm'])->name('import.file');
ImportPatientController.php
<?php
namespace App\Http\Controllers;
use Illuminate\Http\Request;
use App\Models\ImportPatientModel;
use Excel;
use App\Imports\PatientImport;
use App\Http\Controllers\Controller;
class ImportPatientController extends Controller
{
public function importUploadForm()
{
return view('import-form');
}
public function importForm(Request $request)
{
Excel::import(new PatientImport,$request->file2);
return "Record are imported successfully!";
}
}
PatientImport.php (Imports Folder)
<?php
namespace App\Imports;
use App\Models\ImportPatientModel;
use Maatwebsite\Excel\Concerns\ToModel;
use Maatwebsite\Excel\Concerns\WithHeadingRow;
class PatientImport implements ToModel, WithHeadingRow
{
/**
* #param array $row
*
* #return \Illuminate\Database\Eloquent\Model|null
*/
public function model(array $row)
{
return new ImportPatientModel([
'firstName'=>$row['FIRST'],
'lastName' => $row['LAST'],
'email' => $row['EMAIL'],
'phone' => $row['PHONE'],
'department' => $row['DEPARTMENT'],
'location' => $row['LOCATION'],
]);
}
}
ImportPatientModel.php
<?php
namespace App\Models;
use Illuminate\Database\Eloquent\Factories\HasFactory;
use Illuminate\Database\Eloquent\Model;
use Illuminate\Support\Facades\DB;
class ImportPatientModel extends Model
{
use HasFactory;
protected $table = "imported_patients";
protected $fillable = ['firstName', 'lastName', 'email', 'phone', 'department', 'location'];
}
import-form.blade.php
<form action="" method="post" enctype="multipart/form-data" action="{{route('import.file')}}">
<img class="flowhealthlogoform" src="{{ url('images/flowhealthlogo.png')}}" />
<h1> BACKUP LIS </h1>
<!-- CROSS Site Request Forgery Protection -->
#csrf
<div class="form-group">
<label>Upload Excel Sheet</label>
<input type="file" class="form-control {{ $errors->has('file') ? 'error' : '' }}" name="file2" id="file">
<!-- Error -->
#if ($errors->has('file'))
<div class="error">
{{ $errors->first('file') }}
</div>
#endif
</div>
<input type="submit" name="send" value="Submit" class="btn btn-dark btn-block">
</form>```

Answer 1

Array keys in PHP are case sensitive.
I think if you change $row['FIRST'] to $row['first'] the issue will be solved!