As i cloned this repo to my local system, i had to manually import the products.sql database file in a new database, and then specify it in the .env configuration file. This step was not mentioned in the Read-me document.
And i had to face some bugs when i run this application locally. Looks like the code has a copy-paste source. I modified some parts of the code under: app\Http\Controllers\ProductController.php, to get it working. Inside of update function, i had to change:

$product->description = $request->input('address');
to
$product->description = $request->input('description');

and also:
$product = User::find($id);
to
$product = Product::find($id);