Call to a member function getKey() on bool

Question

i'm writing an ACl system for my laravel project and I'm using gates for it. while I'm trying to use the gates, I see this error:

Call to a member function getKey() on bool

can anyone help me with this?

this is my code in AuthServiceProvider.php:

public function boot(): void
{
    $this->registerPolicies();

    foreach ($this->getPermissions() as $permission) {
        Gate::define($permission->name , function ($user) use($permission){
            return $user->hasRole($permission->roles);
        });
    }
}

this is getPermissions() function:

protected function getPermissions(): \Illuminate\Database\Eloquent\Collection|array
{    
    return Permission::with('roles')->get()->all();
}

and this is how I used Gates:

public function index(): \\Illuminate\\Contracts\\Foundation\\Application|\\Illuminate\\Contracts\\View\\Factory|\\Illuminate\\Contracts\\View\\View
{
    $this->authorize('show-users');
    $users = User::latest()->paginate(25);
    return view('Admin.users.all' , compact('users'));
}

and I have this show-users permission in my database