Digital Ocean not executing uploaded files correctly

My Laravel app works fine locally. Another version of it works fine on Digital Ocean when I upload it. When I upload the latest version I get errors. I upload the app to Digital Ocean using Forge from a git repository.

The issue behaves as if the application can't see these changes even though they are there. It is like the old files are cashed. I have erased all the files to reset the service, uploaded the old version (and it works) and restarted the service with no effect. I have downloaded the files via FTP to check if the changes are uploaded, they are there.

In the current version I have made a number of changes to the login process to rename items to signin and signout. I have changed the routes in the Router.php file:

public function auth()
{
    // Authentication Routes...
    $this->get('signin', 'Auth\SigninController@showSigninForm')->name('signin');
    $this->post('signin', 'Auth\SigninController@signin');
    $this->post('signout', 'Auth\SigninController@signout')->name('signout');

    // Registration Routes...
    $this->get('signup', 'Auth\SignupController@showSignupForm')->name('signup');
    $this->post('signup', 'Auth\SignupController@signup');

I have tweaked the controllers, views and the AuthenticatesUsers trait, eg.:

/**
 * Show the application's login form.
 *
 * @return \Illuminate\Http\Response
 */
public function showSigninForm()
{
    return view('auth.signin');
}

When I go to /signin I get the following error in Whoops: (1/1) InvalidArgumentException Route [signin] not defined. in UrlGenerator.php (line 304) at UrlGenerator->route('signin', array(), true) in helpers.php (line 705) at route('signin') in Handler.php (line 68) at Handler->unauthenticated(object(Request), object(AuthenticationException)) in Handler.php (line 114) at Handler->render(object(Request), object(AuthenticationException)) in Handler.php (line 52)

After moving the routes from Router.php to web.php the error moved upstream be: (1/1) BadMethodCallException Method [showSigninForm] does not exist. in Controller.php (line 82) at Controller->__call('showSigninForm', array()) at call_user_func_array(array(object(SigninController), 'showSigninForm'), array()) in Controller.php (line 55) at Controller->callAction('showSigninForm', array()) in ControllerDispatcher.php (line 44) at ControllerDispatcher->dispatch(object(Route), object(SigninController), 'showSigninForm') in Route.php (line 203) at Route->runController() in Route.php (line 160)