I've been experiencing the problem that files are either completely missing from the directory uploads or are within a different directory within uploads.
/wp-content/uploads/2017/09/i-am-expat-fair.jpgis completely missing from the directory(its not even located within a different directory within
/wp-content/uploads/2017/07/30-ruling.jpgis located within
For some reason files got deleted/moved. I've got a broken link detector plugin within the WordPress installation which indicates that the files got removed/moved approximately 50/60 days ago without us doing anything with the website. The files are now being treated as an 404.
I know that this question is very broad, so I'm not expecting a direct solution/answer. I would like to receive any directions in which I could search for a solution.
I would like to add to this: We also have a development environment where the files are not moved/deleted.