Panic: Failed to load system translations for 'en'

Hi

All the tests pass. Make run, runs correctly and I can navigate to the localhost:8065 URL and use the app normally. But when I go on Webstorm and hit run, I get this error:

/usr/local/go/bin/go run /Users/<username>/go/src/github.com/mattermost/platform/mattermost.go
panic: Failed to load system translations for 'en'

goroutine 1 [running]:
panic(0x77f280, 0xc82014b8b0)
	/usr/local/go/src/runtime/panic.go:464 +0x3e6
github.com/mattermost/platform/utils.GetTranslationsBySystemLocale(0xc82014b88b)
	/Users/<username>/go/src/github.com/mattermost/platform/utils/i18n.go:48 +0x18b
github.com/mattermost/platform/utils.InitTranslationsWithDir(0x9a8ba0, 0x4)
	/Users/<username>/go/src/github.com/mattermost/platform/utils/i18n.go:33 +0x2ee
github.com/mattermost/platform/utils.InitTranslations()
	/Users/<username>/go/src/github.com/mattermost/platform/utils/i18n.go:19 +0x2c
main.main()
	/Users/<username>/go/src/github.com/mattermost/platform/mattermost.go:80 +0x2c
exit status 2

Process finished with exit code 1

My system config is exact same as yours, except I'm running Node v5.4.1.