Exception message: Entrypoint build_file_aliases in hello_world.register must be a zero-arg callable: Only Target types and TargetMacro.Factory instances can be registered via the `targets` parameter, given item 'hello_world' with value <module 'hello_world.target.HelloWorld' from '/private/tmp/tp/hello_task/plugins/hello_world/target/HelloWorld.pyc'> of type module