Missing argument In my controller

Hey I am trying to update user profile by sending an id to controller. Every time I submit my form it gives me error missing argument. I have defined route and included id parameter in my controller function but then tooo I get the error.

Code for my controller is

 public function update_avatar(Request $request,$id)
{
    $this->validateInput($request);
    $u = User::findOrFail($id);
    dd($u);
    //Handle the user upload of avatar
    if($request->hasFile('avatar'))
    {
        $avatar = $request->file('avatar');
        $filename = time() . '.' . $avatar->getClientOriginalExtension();
        Image::make($avatar)->resize(300,300)->save(public_path('/uploads/'.$filename));

    }
     $user = Auth::user();
        $user->name = $request->name;
        dd($user->name);
        $user->email = $request->email;
        if($request->password == null)
        {
            $user->password = $u->password;
        }
        $user->password = $request->password;
        $user->avatar = $filename;
        $user->role = 'admin';
        $user->save();
    return view('/adminPanel/adminProfile',array('user' => Auth::user()));
}

code of my view

  <form class="form-horizontal" role="form" enctype="multipart/form-data" action="" method="post">

And my route is

  Route::post('/adminPanel/id/adminProfile',
'AdminProfileController@update_avatar')
 ->name('profile')->middleware('admin');;

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