Getting this action is unauthorized in laravel

I am getting This action is unauthorized 403 when i enter url localhost/website/post/1/edit. i want to protect to edit post from unauthorized user .

in PostController

public function edit($id)
{
$post=Post::findOrFail($id);
$this->authorize('check_access',$post);
return 'You are authorized';
}

In AuthServiceProvider.php

protected $policies = [
Post::class => 'PostPolicy::class',
];

in PostPolicy.php

public function check_access($post)
{
return Auth::user()->id==$post->user_id;
}

In web.php Route::resource('post','PostController');

Please Tell Where i am wrong . i am new in laravel and totally frustrated. Thanks

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