[keycloak-user] Facebook - invalid_grant and "Code not valid"

[Anton]

Hello

We are using KC with Facebook.

This is working fine when we integrate this into our mobile app.

However, on our website (drupal, using
https://www.drupal.org/project/openid_connect) we get the following error
(in drupal):


Could not retrieve tokens. Details: Client error: `POST
https://<url-to-keycloak>/auth/realms/myrealm/protocol/openid-connect/token`
resulted in a `400 Bad Request` response:
{"error":"invalid_grant","error_description":"Code not valid"}


Does anyone know what might be causing this?

Thanks