Hiya @moltar and welcome to our community!
We recommend all build debugging start with this guide: [Support Guide] Debugging Netlify site builds . That’ll walk you through some best practices around configuration and prompt you to answer some questions. As far as I can tell, your site built after you added the file:
…but then failed based on later commits. I can see your last two builds worked, so maybe you figured out a fix you could share with us?