[keycloak-user] Custom account provider not working after upgrading to 4.8.3.Final

Hi - We have implemented a custom account provider which implements AccountProviderFactory and the implementation class extends FreeMarkerAccountProvider. It is packaged and deployed as a provider with a service definition file. This used to be work in keycloak 3.4.3.Final but not after we upgrade to keycloak 4.8.3.Final. We also identified that the provider is not even registering/initialized during boot time of keycloak. Could somebody please tell - whether keycloak has removed support of extending Account provider SPI. Or there is any other way to extend the account provider in keycloak 4.8.3.Final. Any help is greatly appreciated. Thanks -Abhishek