最后一步：切换到fabric-samples/first-network目录下：
输入命令：
./byfn.sh -m up
报错如下：
===================== Querying on peer0.org1 on channel 'mychannel'... =====================
Attempting to Query peer0.org1 ...3 secs
+ peer chaincode query -C mychannel -n mycc -c '{"Args":["query","a"]}'
+ res=0
+ set +x
2020-08-03 12:27:57.310 UTC [main] InitCmd -> WARN 001 CORE_LOGGING_LEVEL is no longer supported, please use the FABRIC_LOGGING_SPEC environment variable
2020-08-03 12:27:57.407 UTC [main] SetOrdererEnv -> WARN 002 CORE_LOGGING_LEVEL is no longer supported, please use the FABRIC_LOGGING_SPEC environment variable
100
!!!!!!!!!!!!!!! Query result on peer0.org1 is INVALID !!!!!!!!!!!!!!!!
================== ERROR !!! FAILED to execute End-2-End Scenario ==================
ERROR !!!! Test failed
求解！！！