Connection Error , there was a networking error in the connection to “url”

Question

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im trying to make an addAction, the method is working just fine on symfony web app and i get the data inserted, but im getting this error on my project when running it. and im wondering what can i do to recognize the error

Connection Error, there was a networking error in the connection to http://localhost/KiddoEsprit/web/app_dev.php/ajoutermobile/aaaaaaaaaa/bbbbbbbbbb/

public void ajouterReclamation(Reclamation r){
        ConnectionRequest con = new ConnectionRequest();
        String Url = "http://localhost/KiddoEsprit/web/app_dev.php/ajoutermobile/" +r.getTitre()+ "/" + r.getContenu()  ;
    con.setUrl(Url);

    con.addResponseListener((l) -> {
        String str = new String(con.getResponseData());
        System.out.println(str);

    });
    NetworkManager.getInstance().addToQueueAndWait(con);

    }

Answer 1

the error is fixed when i started sending the object in a request

String Url = "http://localhost/KiddoEsprit/web/app_dev.php/ajoutermobile?titre=" + r.getTitre()+ "&contenu=" + r.getContenu()  ;

and changed a few code lines on my symfony app