fix redirect error if insufisient funds

src/Controller/UserController.php

@@ -324,7 +324,7 @@ class UserController extends AbstractController
                         $this->translator->trans('Solde de l\'habitant·e insuffisant')
                     );
 
-                    return $this->redirectToRoute('index');
+                    goto end;
                 }
                 
                 // Save transaction