resource setup

app/Models/PaymentMethods.php

@@ -7,6 +7,9 @@ use Illuminate\Database\Eloquent\Model;
 class PaymentMethods extends Model
 {
     protected $table = 'payment_methods';
+
+    protected $primaryKey = 'pm_id';
+
     protected $fillable = [
     'pm_name',
     'created_at',