"twigMacroExt": "macro.twig" in composer.json should be "twigMacroExt": "macro.php"

[jirmueller]

I was running into problems where the terminal told me:
Fatal error: Call to undefined method _TwigTemplate ....

After some research I found this issue has been allready described there:
pattern-lab/starterkit-twig-demo#15 (comment)

Please correct me if I'm wrong.