Files with _snippets in the filename (e.g. top_snippets.md) cause build failures, presumably because the build logic treats any path containing _snippets as an include-only snippets directory.
Expected behavior
Only _snippets/ directories should be treated specially, not files that happen to contain _snippets in their name.
Workaround
Rename files to kebab case (e.g. top-snippets.md).
Reference