Nearly two years ago we began the process of deprecating Paperclip, our file upload library for Ruby on Rails. Our advice was to move projects to ActiveStorage, Rails’ new official file upload mechanism.
For new projects this advice works well, but for many long-running projects the idea of replacing their file uploading infrastructure with an entirely new, incompatible architecture is simply not in their development roadmap.
A design and development firm named Kreeti has picked up Paperclip and is maintaining a fork, kt-paperclip. Be sure to check that out if you need to buy more time before migrating to ActiveStorage.