From legacy tansformation was deprecated in previous version and now removed from acs7. So for local installation also you have to use the transformation service. Just installing the components aren't enough. Properties have also change in new version.
If you are installing acs using distribution package and planning to use transformations then use transformation service.
There are two options:
1- Launch transformation service (tranform-core-aio + activemq docker images) on docker and keep the host and port accessible to your local installation. Use the following properties in local alfresco-global.properties