Update

src/app/beforeConnexion/login/page-login/page-login.component.ts

@@ -37,7 +37,7 @@ export class PageLoginComponent implements OnInit
                 "password": this.password
             };
             this.messageService
-                .sendMessage('connexion', data)
+                .sendMessage('user/auth', data)
                 .subscribe( retour => this.maCallback(retour))
         }
 	}

src/environments/environment.prod.ts

@@ -1,4 +1,4 @@
 export const environment = {
   production: true,
-  debutUrl: "https://localhost/api/"
+  debutUrl: "https://polynotfound.herokuapp.com/api/"
 };