Class App\Http\Controllers\App\Http\Controllers\*** does not exist

I have created a new project (having created many before) working through different functionality and have come across this issue;

ReflectionException in Route.php line 280: Class App\Http\Controllers\UserController does not exist

Now the UserController does exist in App\Http\Controllers so I am unsure as to what is causing this?

UserController

<?php

namespace App\Http\Controllers;

use App\Http\Requests;
use App\User;
use App\UserTypes;

use Auth;
use Hashids;
use Redirect;
use Request;
use Hash;

class UserController extends Controller
{
    public function index(){
        $users = User::get();
        return view('users.index', compact('users'));
    }

    public function getAdd(){
        $user_type = UserTypes::pluck('user_type', 'id');
        return view('users.add', compact('user_type'));
    }

    public function postAdd(){
        $input = Request::all();
        $password = str_random(8);
        $user = User::create(
            'email' => $input['email'],
            'password' => Hash::make($password),
            'first_name' => $input['first_name'],
            'surname' => $input['surname'],
            'phone_number' => $input['phone_number'],
            'user_type' => $input['user_type'],
        );

        return Redirect::action('UserController@index');
    }

    public function getEdit($id){

    }

    public function postEdit($id){

    }

    public function delete($id){
        User::find(current(Hashids::decode($id)))->delete();
        return Redirect::action('UserController@index');
    }
}

Routes

<?php
Route::get('/', 'PagesController@getLogin');
Route::post('/', 'PagesController@postLogin');
Route::get('/logout', 'PagesController@logout');
Route::get('/unauthenticated', 'PagesController@unauthenticated');
Route::get('/recover-password', 'PagesController@recoverPW');
Route::post('/recover-password', 'PagesController@postRecoverPW');

Route::group(['middleware' => 'auth'], function(){
    Route::get('/route/selector', 'PagesController@selectRoute');

    // Admin Only //
    Route::group(['middleware' => 'isAdmin'], function(){
        Route::get('/admin', 'AdminController@index');
        
        Route::get('/users', 'UserController@index');
        Route::get('/user/add', 'UserController@getAdd');
        Route::post('/user/add', 'UserController@postAdd');
        Route::get('/user/edit/{id}', 'UserController@getEdit');
        Route::post('/user/edit/{id}', 'UserController@postEdit');
        Route::get('/user/delete/{id}', 'UserController@delete');
    });
});

User

<?php

namespace App;

use Auth;
use Illuminate\Foundation\Auth\User as Authenticatable;

class User extends Authenticatable
{
    /**
     * The attributes that are mass assignable.
     *
     * @var array
     */
    protected $fillable = [
        'first_name', 'surname', 'email', 'password', 'phone_number', 'usertype', 'active_status'
    ];

    /**
     * The attributes that should be hidden for arrays.
     *
     * @var array
     */
    protected $hidden = [
        'password', 'remember_token',
    ];


    public function isAdmin(){
        if(Auth::user()->user_type == 1){
            return true;
        }else{
            return false;
        }    
    }
}

It seems to show after the following code is added;

$user = User::create(
            'email' => $input['email'],
            'password' => Hash::make($password),
            'first_name' => $input['first_name'],
            'surname' => $input['surname'],
            'phone_number' => $input['phone_number'],
            'user_type' => $input['user_type'],
        );

I hope that someone can help.