I am trying to export my edited images in Lightroom classic but it asks me to

I'm trying to export my edited images but when I do a window comes up saying originals missing for some images. smart previews will be used do you want to continue. When I say yes it wants to export 610 files not only the one that I have edited. I have allowed it to export them since I thought maybe it will stop asking me but when I export my next image it asks me to export them all again. I've never had this issue before can anyone help?