could not import google.golang.org/grpc (cannot find package "google.golang.org/grpc"

Hi I installed golang grpc in my vscode project with some go get commands,

go get -u google.golang.org/protobuf/cmd/protoc-gen-go
go install google.golang.org/protobuf/cmd/protoc-gen-go

go get -u google.golang.org/grpc/cmd/protoc-gen-go-grpc
go install google.golang.org/grpc/cmd/protoc-gen-go-grpc

from https://stackoverflow.com/a/62872353/4159198

my project builds/runs inside vscode and on the command line but autocomplete gives me an error,

could not import google.golang.org/grpc (cannot find package "google.golang.org/grpc" in any of 
	/usr/local/go/src/google.golang.org/grpc (from $GOROOT)
	/home/john/go/src/google.golang.org/grpc (from $GOPATH))

Find from my home directory:

find * -iname google.golang.org
go/src/google.golang.org
go/pkg/mod/google.golang.org
go/pkg/mod/cache/download/google.golang.org
go/pkg/mod/cache/download/sumdb/sum.golang.org/lookup/google.golang.org

My .profile bottom,

export PATH=$PATH:/usr/local/go/bin
export PATH=$PATH:~/go

export GOPATH=/home/john/go
export PATH=$PATH:$GOPATH/bin

I tried copying the source from pkg to src directory.

Try to launch go mod init on every program you want to compile.
If there was packages to imported and it missing, there will be a lightbulb icon that you can click on to automatically go get the packages you want

On your go.mod will there written

google.golang.org/genproto v0.0.0-20200526211855-cb27e3aa2013 // indirect
google.golang.org/protobuf v1.25.0 // indirect