I have used "dep ensure -v" to download all dependent modules to the vendor, but the compilation still reports errors

hzzengyuxing@test3:~/go/src/github.com/solo-io/sqoop$ make sqoop
CGO_ENABLED=0 GOARCH=amd64 GOOS=linux go build -ldflags="-X github.com/solo-io/sqoop/version.Version=dev" -gcflags=all="-N -l" -o /home/hzzengyuxing/go/src/github.com/solo-io/sqoop/_output/sqoop-linux-amd64 ./cmd/main.go
cmd/main.go:6:2: cannot find module providing package github.com/solo-io/go-utils/log: working directory is not part of a module
cmd/main.go:7:2: cannot find module providing package github.com/solo-io/go-utils/stats: working directory is not part of a module
cmd/main.go:8:2: cannot find module providing package github.com/solo-io/sqoop/pkg/setup: working directory is not part of a module
Makefile:79: recipe for target '/home/hzzengyuxing/go/src/github.com/solo-io/sqoop/_output/sqoop-linux-amd64' failed
make: *** [/home/hzzengyuxing/go/src/github.com/solo-io/sqoop/_output/sqoop-linux-amd64] Error 1

And the golang version I use is "go1.14.3 linux/amd64"

Currently sqoop uses gopkg, I think using go mod would be a better way....