Try the following:
1 - As a test launch Photos with the Option key held down and create a new, test library. Import some photos from your caner and test to see if the same problem persists. Does it? This tells us if the problem is limited to your current library or is more wide spread. Then try again in your current library.
2 - if the problem persists in the test library log into a basic admin user account, Set up users, guests, and groups on Mac, create a test library, import again from the camera and see if the problem persists. This tells us if the problem is limited to your user account or is system wide.
3 - If the problem does not appear in your other account go back to your account, boot into Safe Mode according to Start up your Mac in safe mode - Apple Support and repeat Step #1 to see if the problem persists. Reboot normally and test again.
NOTE: Safe Mode boot can take up to nearly twice as long as a normal boot as it's doing the following;
• Verifies your startup disk and attempts to repair directory issues, if needed
• Loads only required kernel extensions (prevents 3rd party kernel/extensions from loading)
• Prevents Startup Items and Login Items from opening automatically
• Disables user-installed fonts
• Deletes font caches, kernel cache, and other system cache files