Argh, Sony is such a strange company sometimes. But, with the update to MacOS Cataline (10.15), all their utilities break. The most important of which is firmware updates for the Sony A7R Mark III. The version 3.0 added human eye AF and animal eye AF and this won’t download properly with Catalina. YOu just have to wait and hope that Sony eventually updates things. They apparently reach deep into the driver set to do their work.