Existing user with TOTP Second-factor Auth activated work fine.
New users cannot activate TOTP Second-factor Auth. Checking the box gives not additional steps to activate.
I look in the oc_twofactor_totp_secrets table do see the two user that tried today have records with secret keys that have not been verified. So it is partially doing something, but not allowing the process to complete by giving the necessary info to the user.
[Log] JQMIGRATE: Migrate is installed, version 1.4.0 (jquery-migrate.min.js, line 2)
[Error] Failed to load resource: the server responded with a status of 500 (Internal Server Error) (enable, line 0)