我正在學習使用 etcd 進行服務發現的 go-kit 教程。我正在使用 Goland 在本地構建一個多容器架構，并且剛剛開始在 etcd 中注冊一個服務（通知程序）。一切似乎都很好，但是當我運行時：docker-compose up --build 通知器我得到：#12 7.248 /go/pkg/mod/github.com/go-kit/[email protected]/sd/etcd/client.go:13:2: missing go.sum entry for module providing package go.etcd.io/etcd/client/v2 (imported by github.com/go-kit/kit/sd/etcd); to add:#12 7.248   go get github.com/go-kit/kit/sd/[email protected]當我運行 go get github.com/go-kit/kit/sd/[email protected] 然后重新運行 docker-compose up --build notificator 時，即使 go.sum 包含以下內容，錯誤仍然存在：go.etcd.io/etcd/api/v3 v3.5.0/go.mod h1:cbVKeC6lCfl7j/8jBhAK6aIYO9XOjdptoxU/nLQcPvs=go.etcd.io/etcd/client/pkg/v3 v3.5.0/go.mod h1:IJHfcCEKxYu1Os13ZdwCwIUTUVGYTSAM3YSwc9/Ac1g=go.etcd.io/etcd/client/v2 v2.305.0/go.mod h1:h9puh54ZTgAKtEbut2oe9P4L/oqKCVB6xsXlzd7alYQ=go.etcd.io/etcd/client/v3 v3.5.0/go.mod h1:AIKXXVX/DQXtfTEqBryiLTUXwON+GuvO6Z7lLS/oTh0=go.mod 是：module notificatorgo 1.15require (    github.com/go-kit/kit v0.12.0    github.com/lightstep/lightstep-tracer-go v0.25.0    github.com/oklog/oklog v0.3.2    github.com/oklog/run v1.1.0 // indirect    github.com/opentracing/basictracer-go v1.1.0 // indirect    github.com/opentracing/opentracing-go v1.2.0    github.com/openzipkin-contrib/zipkin-go-opentracing v0.4.5    github.com/openzipkin/zipkin-go v0.3.0    github.com/prometheus/client_golang v1.11.0    golang.org/x/net v0.0.0-20211216030914-fe4d6282115f    google.golang.org/grpc v1.43.0    google.golang.org/protobuf v1.27.1    sourcegraph.com/sourcegraph/appdash v0.0.0-20211028080628-e2786a622600)不知道如何解釋，因為在我看來條件滿足？我還以為會自動導入？