pdet_test/app/Models/ExemptData.php

<?php

namespace App\Models;

use Illuminate\Database\Eloquent\Factories\HasFactory;
use Illuminate\Database\Eloquent\Model;
use Illuminate\Notifications\Notifiable;
use Laravel\Sanctum\HasApiTokens;

class ExemptData extends Model
{
    use HasApiTokens, HasFactory, Notifiable;

    protected $primaryKey = 'id';
    protected $fillable = [
        'project_number',
        'duration_unit',
        'exempt_date',
    ];
    public $timestamps = false;
}