Development of Bolt Version <= 3.7.4 stopped. It is recommended to switch to new version 5.x and so does all-mine.org. Please switch to Flexfolio5 the next weeks. There are easy ways to move to Bolt CMS 5.x. There is some work from all-mine.org on docs and guides to show how you can easy switch to Flexfolio5. Unfortunately it is a lack of documentation right now.