We had an issusue on our website that a lot of images got duplicated.
Also sometimes the website is loading slow and giving an database error.
I solved the images duplication issue and removed the duplicated images from the wordpress upload folder throught ftp.
But the images are still visible in the wordpress media library.
Also the website is still giving an database error while loading the media library.
See this screencast: https://somup.com/c0Velww8vV