Starting business network definition. This may take a minute...
Error: Error trying to start business network. Error: No valid responses from any peers.
Response from attempted peer comms was an error: Error: 2 UNKNOWN: chaincode error (status: 500, message: is not a valid endorsement system chaincode)
Response from attempted peer comms was an error: Error: 2 UNKNOWN: chaincode error (status: 500, message: is not a valid endorsement system chaincode)
Response from attempted peer comms was an error: Error: 2 UNKNOWN: chaincode error (status: 500, message: is not a valid endorsement system chaincode)
Response from attempted peer comms was an error: Error: 2 UNKNOWN: chaincode error (status: 500, message: is not a valid endorsement system chaincode)
Command failed
请帮助我解决Composer中的此错误。
答案 0 :(得分：1)
当您拥有Composer v0.20并尝试使用Fabric 1.1时，通常会看到此错误。对于Composer v0.20，您需要使用Fabric 1.2或Fabric 1.2.1。 This document shows Composer和兼容结构版本的发布。
如果您需要有关删除Fabric 1.1和安装Fabric 1.2.1的详细说明，那么comments in this issue之一将介绍这些步骤。