drive public link repair icon of three connected doc on a file icon

Link Repair will scan your current google file or your drive and update any links which require a resource key for anonymous user access. This link update means users will not have to request access.

Google Announced a security change being implemented as of September 13th:

This update will change the links used for some files, and may lead to some new file access requests. Access to impacted files won’t change for people who have already viewed them, but others may need to request access. Details on the number of files, shared drives, and users that will be impacted by this update are below.