The index.md pages in docs/ and v1/ are content pages.
Based on this structure and the Hugo documentation there is nothing wrong about this structure and I couldn’t find any information about issues with particular nesting levels.
I assume that based on the structure, the about page in the general folder should get the URL /docs/v1/general/about.
However, Hugo does not render any pages in the v1 directory at all. Only the index page in the docs/ directory is showing up. I tried so many things, deleting the index.md files from the parent directories, renaming the pages, manually set an URL in the front matter. But nothing works.