Update Router.hpp

src/oatpp/web/url/mapping/Router.hpp

@@ -148,7 +148,7 @@ public:
 
     for(auto& pair : m_endpointsByPattern) {
       auto mapping = pair.first->toString();
-      OATPP_LOGD("Router", "url '%s %s' -> mapped", (const char*)branch.getData(), (const char*) mapping->getData());
+      OATPP_LOGD("Router", "url '%s %s' -> mapped", (const char*)branch.getData(), mapping->c_str());
     }
 
   }