intento

app/Models/Sale.php

@@ -3,13 +3,10 @@
 namespace App\Models;
 
 use Illuminate\Database\Eloquent\Model;
-
+use Illuminate\Database\Eloquent\Factories\HasFactory;
 class Sale extends Model
 {
-    use HasFactory;
-    protected $fillable = [
-        'metodo_pago'
-    ];
+    //use HasFactory;
 
     // Permitimos asignación masiva para poder guardar rápido
     protected $guarded = [];