while
go get -u -v “golang.org/x/net/http2”
following error:
golang.org/x/net/http2
go/src/golang.org/x/net/http2/client_conn_pool.go:305:6: undefined: errors.Is
go/src/golang.org/x/net/http2/server.go:234:72: undefined: tls.VersionTLS13
Appreciate help to fix