undefined: resolver.ResolveNowOption

go get go.etcd.io/etcd/clientv3
# github.com/coreos/etcd/clientv3/balancer/resolver/endpoint
C:\Users\gaoev\go\pkg\mod\github.com\coreos\etcd@v3.3.27+incompatible\clientv3\balancer\resolver\endpoint\endpoint.go:114:78: undefined: resolver.BuildOption
C:\Users\gaoev\go\pkg\mod\github.com\coreos\etcd@v3.3.27+incompatible\clientv3\balancer\resolver\endpoint\endpoint.go:182:31: undefined: resolver.ResolveNowOption
# github.com/coreos/etcd/clientv3/balancer/picker
C:\Users\gaoev\go\pkg\mod\github.com\coreos\etcd@v3.3.27+incompatible\clientv3\balancer\picker\err.go:37:44: undefined: balancer.PickOptions
C:\Users\gaoev\go\pkg\mod\github.com\coreos\etcd@v3.3.27+incompatible\clientv3\balancer\picker\roundrobin_balanced.go:55:54: undefined: balancer.PickOptions
: undefined: resolver.ResolveNowOption
# github.com/coreos/etcd/clientv3/balancer/picker
C:\Users\gaoev\go\pkg\mod\github.com\coreos\etcd@v3.3.27+incompatible\clientv3\balancer\picker\err.go:37:44: undefined: balancer.PickOptions
C:\Users\gaoev\go\pkg\mod\github.com\coreos\etcd@v3.3.27+incompatible\clientv3\balancer\picker\roundrobin_balanced.go:55:54: undefined: balancer.PickOptions

go mod 文件中添加 replace google.golang.org/grpc => google.golang.org/grpc v1.26.0