I accidentally deleted something or files when I was editing my photos. Now, there is an exclamation mark ( ! ) at the upper right hand corner on each of the photos, and whatever I want to do, the "source of files missing or offline " pops up on the screen. I am stuck now. Could someone help please?
You need to relocate the image location in Lightroom Catalog if you have moved same images to the different location Refer: Adobe Photoshop Lightroom Help | Locate missing photos
however, If you have deleted the source images from the System drive, then there's no way to fix this, what you can do maximum is to export the previews for the missing files as jpeg and for that need to add a script in Lightroom
Hope it helps.
thanks, mate. Luckily I got it export to my hard drive before the mistake happened.