xxl-rpc request data empty 解決

xxl的執行器出現以下報錯，但是可以正常使用

com.xxl.rpc.util.XxlRpcException: xxl-rpc request data empty.

    at com.xxl.rpc.remoting.net.impl.netty_http.server.NettyHttpServerHandler.process(NettyHttpServerHandler.java:77) [xxl-rpc-core-1.5.0.jar!/:na]

    at com.xxl.rpc.remoting.net.impl.netty_http.server.NettyHttpServerHandler.access$000(NettyHttpServerHandler.java:26) [xxl-rpc-core-1.5.0.jar!/:na]

    at com.xxl.rpc.remoting.net.impl.netty_http.server.NettyHttpServerHandler$1.run(NettyHttpServerHandler.java:50) [xxl-rpc-core-1.5.0.jar!/:na]

    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) [na:1.8.0_151]

    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) [na:1.8.0_151]

    at java.lang.Thread.run(Thread.java:748) [na:1.8.0_151]