I have just updated to Firefox115.2.1 ESR. On the recommendation of Mozilla! The small icon next to my bookmarks are missing and the bookmark doesn't work. Only a few of the bookmarks have an icon. I have a large number of bookmarks, so I do not want to create them again. It would take me hours to do. I have tried to import bookmarks backup but nothing seems to happen.

I hope someone can give me a quick simple answer. Thanks Brian