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

In this business it helps if one is a masochist. 

Consider minor syntactical changes that do result in breakages as hors d'oeuvres... it's the more subtle changes that don't cause outright breakages- which are typically harder to notice and often have an implication for site security- that are the real nut-shots (like the modifications to CI's routing).