是在程序中通过java版的Fabric-sdk调用部署在远程主机上的智能合约执行相关的业务逻辑，但在执行过程中出现异常信息，导致交易请求没有提交到Fabric的peer节点上，具体异常信息如下：
17:16:06 [http-bio-8080-exec-5] ERROR org.hyperledger.fabric.sdk.Channel - Sending proposal to peer0.org0.example.com failed because of: gRPC failure=Status{code=UNKNOWN, description=chaincode error (status: 500, message: Failed to unmarshal section -), cause=null}
java.lang.Exception: io.grpc.StatusRuntimeException: UNKNOWN: chaincode error (status: 500, message: Failed to unmarshal section -)
at org.hyperledger.fabric.sdk.Channel.sendProposalToPeers(Channel.java:2241)
at org.hyperledger.fabric.sdk.Channel.sendProposal(Channel.java:2155)
at org.hyperledger.fabric.sdk.Channel.sendTransactionProposal(Channel.java:2103)
at com.cmit.fabric.java.sdk.test.bean.ChaincodeManager.invokeWithTransactionId(ChaincodeManager.java:307)
at com.cmit.fabric.java.sdk.test.service.impl.SectionSDKServiceImpl.updateSection(SectionSDKServiceImpl.java:155)
at rsbc.controller.NetworkController.modifySave(NetworkController.java:357)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:221)
at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:136)
at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:110)
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:832)
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:743)
at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:85)
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:961)
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:895)
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:967)
at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:869)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:650)
at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:843)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:731)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at com.planetj.servlet.filter.compression.CompressingFilter.doFilter(CompressingFilter.java:293)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.apache.shiro.web.servlet.ProxiedFilterChain.doFilter(ProxiedFilterChain.java:61)
at org.apache.shiro.web.servlet.AdviceFilter.executeChain(AdviceFilter.java:108)
at org.apache.shiro.web.servlet.AdviceFilter.doFilterInternal(AdviceFilter.java:137)
at org.apache.shiro.web.servlet.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:125)
at org.apache.shiro.web.servlet.ProxiedFilterChain.doFilter(ProxiedFilterChain.java:66)
at org.apache.shiro.web.servlet.AbstractShiroFilter.executeChain(AbstractShiroFilter.java:449)
at org.apache.shiro.web.servlet.AbstractShiroFilter$1.call(AbstractShiroFilter.java:365)
at org.apache.shiro.subject.support.SubjectCallable.doCall(SubjectCallable.java:90)
at org.apache.shiro.subject.support.SubjectCallable.call(SubjectCallable.java:83)
at org.apache.shiro.subject.support.DelegatingSubject.execute(DelegatingSubject.java:383)
at org.apache.shiro.web.servlet.AbstractShiroFilter.doFilterInternal(AbstractShiroFilter.java:362)
at org.apache.shiro.web.servlet.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:125)
at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:346)
at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:262)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at net.mopai.filter.SiteStatusFilter.doFilterInternal(SiteStatusFilter.java:50)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:346)
at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:262)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at net.mopai.filter.HtmlFilter.doFilterInternal(HtmlFilter.java:40)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:121)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:219)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:110)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:506)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:169)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:962)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:445)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1115)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:637)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:318)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Unknown Source)
Caused by: io.grpc.StatusRuntimeException: UNKNOWN: chaincode error (status: 500, message: Failed to unmarshal section -)
at io.grpc.Status.asRuntimeException(Status.java:526)
at io.grpc.stub.ClientCalls$UnaryStreamToFuture.onClose(ClientCalls.java:427)
at io.grpc.internal.ClientCallImpl.closeObserver(ClientCallImpl.java:419)
at io.grpc.internal.ClientCallImpl.access$100(ClientCallImpl.java:60)
at io.grpc.internal.ClientCallImpl$ClientStreamListenerImpl.close(ClientCallImpl.java:493)
at io.grpc.internal.ClientCallImpl$ClientStreamListenerImpl.access$500(ClientCallImpl.java:422)
at io.grpc.internal.ClientCallImpl$ClientStreamListenerImpl$1StreamClosed.runInContext(ClientCallImpl.java:525)
at io.grpc.internal.ContextRunnable.run(ContextRunnable.java:37)
at io.grpc.internal.SerializingExecutor.run(SerializingExecutor.java:102)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
... 1 common frames omitted
面对这个问题没有什么头绪，不知道是哪里出了问题，求问Fabric方面的大神能否给帮忙解释一下，这个异常是因为什么问题导致的！！！不胜感激！！！
问题已经解决，是因为忽略了在部署多通道情况下，通道数据需要同步，否则会因为chaincode中进行校验而导致chaincode执行失败，最终导致前台应用程序报错。
这个地方的悬赏是我搞错了，只弄了5C币。。。如果有大神能够帮助解决问题，我可以再重新提出这个问题，增加悬赏。。。
你好，我的也报类似的错，mac环境，也是不知头绪。。。
main ERROR Channel:2766 - Sending proposal to peer0.org1.example.com failed because of: gRPC failure=Status{code=UNAVAILABLE, description=Network closed for unknown reason, cause=null}
java.lang.Exception: io.grpc.StatusRuntimeException: UNAVAILABLE: Network closed for unknown reason
at org.hyperledger.fabric.sdk.Channel.sendProposalToPeers(Channel.java:2766)
{"code":9999,"error":"Request failed： org.hyperledger.fabric.sdk.exception.TransactionException: org.hyperledger.fabric.sdk.exception.ProposalException: getConfigBlock for channel mychannel failed with peer peer0. Status FAILURE, details: Sending proposal to peer0 failed because of: gRPC failure=Status{code=UNAVAILABLE, description=io exception, cause=io.netty.channel.AbstractChannel$AnnotatedConnectException: Connection refused: /0.0.0.0:7051\n\tat sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)\n\tat sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:717)\n\tat io.netty.channel.socket.nio.NioSocketChannel.doFinishConnect(NioSocketChannel.java:325)\n\tat io.netty.channel.nio.AbstractNioChannel$AbstractNioUnsafe.finishConnect(AbstractNioChannel.java:340)\n\tat io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:635)\n\tat io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:582)\n\tat io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:499)\n\tat io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:461)\n\tat io.netty.util.concurrent.SingleThreadEventExecutor$5.run(SingleThreadEventExecutor.java:884)\n\tat io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30)\n\tat java.lang.Thread.run(Thread.java:748)\nCaused by: java.net.ConnectException: Connection refused\n\t... 11 more\n}"}
请求就报这样的错是grpc问题吗？
JAR包版本的问题，换个版本就好了， 你看下你的是哪个版本