老师你好~
我用的是课程提供的fabirc代码，fabric-sdk-go也已经切换到了对应fabric1.0的版本，fabric网络已经正确运行起来，也安装了课程提供的智能合约。
但是在编译外部服务时出错。代码如下

[root@localhost application]# go build
# github.com/hyperledger/fabric/vendor/google.golang.org/grpc/connectivity
../../vendor/google.golang.org/grpc/connectivity/connectivity.go:46:3: undefined: grpclog.Errorf
# github.com/hyperledger/fabric/vendor/github.com/hyperledger/fabric-sdk-go/pkg/core/config
../../vendor/github.com/hyperledger/fabric-sdk-go/pkg/core/config/config.go:61:28: backend.configViper.MergeInConfig undefined (type *viper.Viper has no field or method MergeInConfig)
../../vendor/github.com/hyperledger/fabric-sdk-go/pkg/core/config/config.go:93:27: backend.configViper.MergeConfig undefined (type *viper.Viper has no field or method MergeConfig)

请问如何解决