rocketmq启动出问题

解压后配置环境变量ROCKET_HOME 接着启动mqnamesrv.cmd报下面的错，不懂问题是出在哪里。。。求大神指出。

PS C:down jarrocketmqrocketmq-all-4.2.0-bin-releasebin> mqnamesrv.cmd
Java HotSpot(TM) 64-Bit Server VM warning: Using the DefNew young collector with the CMS collector is deprecated and will likely be removed in a future release
Java HotSpot(TM) 64-Bit Server VM warning: UseCMSCompactAtFullCollection is deprecated and will likely be removed in a future release.
错误: 找不到或无法加载主类 jarrocketmqrocketmq-all-4.2.0-bin-releasebinjarrocketmqrocketmq-all-4.2.0-bin-releaselib