fix case where user already had an account

app/Http/Controllers/Auth/OAuthController.php

@@ -62,7 +62,7 @@ protected function callback(Request $request, string $driver): RedirectResponse
             ];
 
             $user = $this->creationService->handle($userdata);
-        }else {
+        }else if (!$user) {
             // No user found - redirect to normal login
             return redirect()->route('auth.login');
         }