I run a search engine that publishes in twelve languages from one static site on Cloudflare Pages. Last week I audited its machine-readable layer — the part crawlers and answer engines read rather than humans — and found four problems. None of them threw an error.
Source: [Dev.to](https://dev.to/ohadfarkash/the-multilingual-bugs-that-never-throw-hreflang-json-ld-and-a-site-in-12-languages-50d2)