Investigate why there are null smb_user_id in sandman.user table. There could be two reasons:
1. These users have not logged in since we moved to Keycloak
2. They have not verified their email
We need to figure out how the column in the table is populated.
This reason does not seem to be valid. I see an entry with null sum_user_id with a date of today.
Before the email is verified, a row is not created in the table. I will wait and see what happens if I verify the email after the link has expired (30 minutes).
Tried verifying the email after the link expired. It sent me to a login page where it gave me an option for the verification email to be resent. Took that option. No row was created for that email used.