Why there is error Route [dataProcessing] not defined?

I am getting below error which is for only product controller

Route [dataProcessing] not defined. 

In the product controller I have script as below

public function index(){
    $Products = Product::all();
    return view('product-list', ['products' => $Products]); 
}

and in the blade I am just trying to echo the data

and my route is as following

Route::get('/product-list', 'ProductController@index');

Can someone kindly guide me why there is error even the script if so simple. Thank you so much

via Chebli Mohamed