Optaplanner dependencies were not removed from the Fuse features files and Optaplanner jars are no longer available. See [1,2]. It is especially problem because of "kie-server-client" feature which is important for communication with Kie server.

[1] https://github.com/kiegroup/droolsjbpm-integration/blob/7.67.x-blue/kie-osgi/kie-karaf-features/src/main/filtered-resources/repository/features-fuse.xml#L87

[2] https://github.com/kiegroup/droolsjbpm-integration/blob/7.67.x-blue/kie-osgi/kie-karaf-features/src/main/filtered-resources/repository/features-fuse.xml#L119