on front dashboard screen of v5 self-hosted, your question mark “user guide” link at the bottom of the left hand side navigation column ends up here:
https://invoiceninja.github.io/docs/introduction
which produces a 404 file not found error page. now, if you simply remove ‘/docs/introduction’, you do wind up approximately where you want to be.
very low level bug. just thought i’d mention it. thanks.