Add to cart button doesn't work. After click the button cart page doesn't load - laravel-8

Question

This is Laravel 8.I set '/cart' route to href of add to cart button.but it also didn't work.got an error as 'session not found'.I made this while watching a youtube video.But it's not work.
What is the problem of my code?
Plz help me!
ShopComponent.php
<?php
namespace App\Http\Livewire;
use App\Models\Product;
use Livewire\Component;
use Livewire\WithPagination;
use Cart;
class ShopComponent extends Component
{
public function store($product_id,$product_name,$product_price){
Cart::add($product_id,$product_name,1,$product_price)->asseociate('App\Models\Product');
session()->flash('success_message','Item added in Cart');
return redirect()->route('product.cart');
}
public function render()
{
$products = Product::paginate(12);
return view('livewire.shop-component',['products'=>$products])->layout("layouts.base");
}
}
shop-component.blade.php
<div class="product-info">
<span>{{$product->name}}</span>
<div class="wrap-price"><span class="product-price">{{$product->regular_price}}</span></div>
Add To Cart
</div>
web.php
<?php
use App\Http\Livewire\HomeComponent;
use App\Http\Livewire\ShopComponent;
use App\Http\Livewire\CartComponent;
use App\Http\Livewire\CheckoutComponent;
use App\Http\Livewire\DetailsComponent;
use App\Http\Livewire\User\UserDashboardComponent;
use App\Http\Livewire\Admin\AdminDashboardComponent;
use Illuminate\Support\Facades\Route;
Route::get('/cart',CartComponent::class)->name('product.cart');
app.php
'aliases' => Facade::defaultAliases()->merge([
// 'ExampleClass' => App\Example\ExampleClass::class,
])->toArray(),
DetailsComponent.php
<?php
namespace App\Http\Livewire;
use App\Models\Product;
use Livewire\Component;
use Cart;
class DetailsComponent extends Component
{
public $slug;
public function mount($slug){
$this->slug=$slug;
}
public function store($product_id,$product_name,$product_price){
Cart::add($product_id,$product_name,1,$product_price)->asseociate('App\Models\Product');
session()->flash('success_message','Item added in Cart');
return redirect()->route('product.cart');
}
cart-component.blade.php
<div class=" main-content-area">
<div class="wrap-iten-in-cart">
#if(session::has('success_message'))
<div class="alert alert-success">
<strong>Success</strong>{{Session::get('success_message')}}
</div>
#endif
#if(Cart::count()>0)
<h3 class="box-title">Products Name</h3>
<ul class="products-cart">
#foreach(Cart::content() as $item)
<li class="pr-cart-item">
<div class="product-image">
<figure><img src="{{('assets/images/products')}}/{{$item->image}}" alt="{{$item->model->name}}"></figure>
</div>
<div class="product-name">
<a class="link-to-product" href="{{route('product.details',['slug'=>$item->model->slug])}}">{{$item->model->name}}</a>
</div>
<div class="price-field produtc-price"><p class="price">Rs.{{$item->model->regular_price}}</p></div>
<div class="quantity">
<div class="quantity-input">
<input type="text" name="product-quatity" value="{{$item->qty}}" data-max="120" pattern="[0-9]*" >
<a class="btn btn-increase" href="#"></a>
<a class="btn btn-reduce" href="#"></a>
</div>
</div>
<div class="price-field sub-total"><p class="price">Rs.{{$item->subtotal}}</p></div>
<div class="delete">
<a href="#" class="btn btn-delete" title="">
<span>Delete from your cart</span>
<i class="fa fa-times-circle" aria-hidden="true"></i>
</a>
</div>
</li>
#endforeach
</ul>
#else
<p>No Item In Cart</p>
#endif
</div>