Buildmetadata cannot find metadata.xml.gz

[avrahams]

go install github.com/nyaruka/phonenumbers/cmd/buildmetadata@latest
go: downloading github.com/nyaruka/phonenumbers v1.6.1

$GOPATH/bin/buildmetadata
Cloning upstream repo... OK
Building number metadata...error writing metadata.xml.gz: open data/metadata.xml.gz: no such file or directory

[rowanseymour]

I think that command is expecting to be run from the directory where you have phonenumbers checked out