I gave up on using Nextcloud because every time it updated it accumulated more and more errors and there was no way I was going to use a software that I had to troubleshoot every single update. Also the defaults for pictures are apparently quite stupid and so instead of making and showing tiny thumbnails for pictures, the thumbnails are unnecessarily large and loading the thumbnails for a folder of pictures takes forever. You can fix this and tell it to make smaller thumbnails apparently, but again, why am I having to fix everything myself? These should be sane defaults. Unfortunately, I just can't trust Nextcloud.