Internal links use hash-based routing

What this means

Links on this page route through a URL fragment (`#!` or `#/`). Fragments are never sent to the server and Google deprecated the AJAX-crawling `#!` scheme in 2015, so every one of these destinations collapses onto a single indexable URL. The distinct pages behind them cannot rank on their own.

How to fix it

Move the client-side router to the History API so each view has a real, server-addressable path, and link to those paths with ordinary <a href> elements.

Fix effort

This check needs a developer fix: it turns on a routing, hosting or infrastructure decision that no automatic edit can make safely.

Authoritative source

https://developers.google.com/search/docs/crawling-indexing/javascript/javascript-seo-basics