Cannot access protected property CodeIgniter\HTTP\IncomingRequest::$uri

Hello I followed the steps to upgrade from 4.4.8 to 4.5.0 ,

but i get this error

Cannot access protected property CodeIgniter\HTTP\IncomingRequest::$uri on line 75

PHP Code:

      // $this->language->setLocale($this->session->lang); 
69        // Preload any models, libraries, etc, here.    
70 
71        // Determine whether to include the template or not
72            $excludedUrls = ['home','/','',NULL, 'about', 'login','register','users','/users/register','users/registerUser','registerUser','blog', 'contact'];
73 
74            // Get the request URI segment 1
75            $requestUri = $this->request->uri->getSegments();
76            $this->includeTemplate = false;
77            foreach ($requestUri as $urisegment){
78 


Any ideas on the cause of the issue? thx