When you increase hreflang tags, ensure all of them point to indexable and crawlable pages. Verify which tags are causing the problems and rectify them by ensuring that the pages they’re pointing to are live.  Use Google’s URL inspection Software if required to Test personal pages and reveal their partnership https://social4geek.com/story4340810/the-smart-trick-of-was-ist-ein-canonical-tag-that-nobody-is-discussing