我在执行Cypher语句时收到了上述错误。这里有更多来自日志：
06:58:28.837 [qtp2134377029-224] WARN org.eclipse.jetty.server.HttpChannel - Could not send response error 500: java.lang.IllegalStateException: Committed
06:58:47.109 [qtp2134377029-224] WARN org.eclipse.jetty.server.Response - Committed before 400 org.neo4j.server.rest.repr.OutputFormat$1@6e581b9c
06:58:47.110 [qtp2134377029-224] WARN o.e.jetty.servlet.ServletHandler - /db/data/cypher
java.lang.IllegalStateException: Committed
这是什么意思？我正在使用neo4j 2.2.4企业版。