Member has protected visibility and is not accessible from the current context.PHP

My editor shows an error even the field is not a protected, now I wondering if model is valid column name or it just a bug in PHP debugging tools/extensions.

I am using VScode and I have this php related extensions:

–PHP by DEVSENSE

–PHP Profiler by DEVSENSE

–PHP Intelephense

I disabled PHP by DEVSENSE and the errors gone so its likely a bug in an extension?

Error message: Member has protected visibility and is not accessible from the current context.PHP(PHP1416)

I tried to use it and I successfully display the data

ProductController.php

<?php

namespace AppHttpControllers;
use IlluminateHttpRequest;
use AppModelsProduct;

class ProductController extends Controller
{
    /**
     * Display a listing of the resource.
     */
    public function index()
    {
        
    $products = Product::all();

    $products = $products->map(function ($product) {
        return [
            'id' => $product->id,
            'name' => $product->name,
            'brand' => $product->brand,
            'model' => $product->model,
            'description' => $product->description,
            'image_url' => $product->image_url,
            'price' => $product->price,
            'category_name' => $product->category->name ?? 'N/A',
            'supplier_name' => $product->supplier->name ?? 'N/A',
        ];
    });

    return response()->json($products);
    }
}

Product.php in Models

<?php

namespace AppModels;

use IlluminateDatabaseEloquentFactoriesHasFactory;
use IlluminateDatabaseEloquentModel;

class Product extends Model
{
    use HasFactory;

    public function category()
    {
        return $this->belongsTo(Category::class);
    }

    public function supplier()
    {
        return $this->belongsTo(Supplier::class);
    }
}

Here is how I create the table in migration

public function up(): void
    {
        Schema::create('products', function (Blueprint $table) {
            $table->id();
            $table->foreignId('category_id')->constrained('categories')->onDelete('restrict');
            $table->foreignId('supplier_id')->constrained('suppliers')->onDelete('restrict');
            $table->string('name');
            $table->string('brand');
            $table->string('model');
            $table->string('description');
            $table->string('image_url');
            $table->decimal('price');
            $table->timestamps();
        });

        DB::statement('ALTER TABLE products AUTO_INCREMENT = 100000;');
    }