For me, the error I got was coming from some generated gRPC code:

ambiguous import: found package google.golang.org/genproto/googleapis/rpc/status in multiple modules

I had to delete the package from ~/go/pkg and then go get:

sudo rm -rf ~/go/pkg/mod/google.golang.org/genproto/googleapis
go get google.golang.org/genproto

I had to sudo the rm -rf because the file permissions were whack. Maybe the root cause? Not sure.