Default Event Listener Not Sending Email

Keycloak is configured and operational. I am able to send test emails, and I receive password reset emails. However, I have configured an event listener in Events > Config to send an email on UPDATE_PASSWORD, which sends an email to let the user know their password was successfully reset. I added the email event listener as well. The email will not send. In the logs I notice the following errors:

23:10:27,811 ERROR [org.keycloak.services] (default task-4) KC-SERVICES0083: Event listener ‘email’ registered, but provider not found

Any ideas? Thanks