当我运行一个简单的程序时，我得到了这个
Can't construct a java object for tag:yaml.org,2002:org.apache.cassandra.config.Config; exception=Cannot create property=hinted_handoff_throttle_in_kb for JavaBean=org.apache.cassandra.config.Config@1cd2e5f; Unable to find property 'hinted_handoff_throttle_in_kb' on class: org.apache.cassandra.config.Config
Invalid yaml; unable to start server. See log for stacktrace.
任何人都可以告诉我为什么这样吗？