'Unsupported response mode: query' when linking accounts

Installed Account linking extension and It workesd as intended when first signing up with email/password and then with a social connection (google in my case).
But when trying to link a google social connection as primary and email/password as secondary.
After clicking Continue on account linking consent page, instead of asking me to login using google credentials it errors out showing this in the log

  "date": "2022-02-09T17:48:46.390Z",
  "type": "f",
  "description": "Unsupported response mode: query",
  "connection": "google-oauth2",
  "connection_id": "con_tuUHkDgE",
  "client_id": "yHpJ47mq06XX9ffiUA",
  "client_name": "dev",
  "ip": "XXX",
  "user_agent": "Chrome 97.0.4692 / Linux 0.0.0",
  "details": {
    "body": {},
    "qs": {
      "state": "qaYvtmGpVSV5q4lZTXSEUCz4zwX2EkHG"
    "connection": "google-oauth2",
    "error": {
      "message": "Unsupported response mode: query",
      "oauthError": "unsupported_response_mode",
      "type": "oauth-authorization"
    "session_id": "kpl6qjyp9tltWiTp2M7y"
  "hostname": "domain.us.auth0.com",
  "user_id": "google-oauth2|1112314,
  "user_name": "usernam@gmail.com",
  "strategy": "google-oauth2",
  "strategy_type": "social",
  "audience": "xx"
  "scope": [
  "isMobile": false

In the Auth0 dashboard it shows the accounts are linked as I can see two identies for that user without actually logging in using google.

I used default configuration for SPA for my main application and for account linking extension application used the same callback, allowed origin etc.

1 Like

I am having the exact same issue here. Any Ideas?