Why won't Photos allow me to open/view RAW images?

I am shooting with a Nikon D810 and when I upload pictures to Photos it will not allow me to open/view the RAW files when selecting them. Like if I am viewing the thumbnail images I can see the picture but when I select it to open/enlarge it shows a gray card image with "!" Please help.

Has invited:

howapple - hello

Favor from:

The ! indicates a disconnect between the thumbnail and the original and can be caused by database corruption or user actions

Does it work correctly in iPhoto? If so I would try migrating again

for database corruption backup your Photo library and launch Photos while holding down the option and command keys - repair the database

For user action (if you have cleaned thing sup and delete the originals or run Malwear like CleanMyMac or MacKeeper that damage the database you need to restore a backup form when it was working

LN

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