Preview unavailable for this file

[Coachway]

 

I have switched from a 5d Mark IV to and R5. I formatted the card in the R5 and when I'm trying to upload the files to light room most of them say this. 

[Coachway]

Hey I placed my scandisk extreme pro 64gb in my R5 and formatted the card. I took photos for a session but when I upload to Lightroom it says "preview unavailable for this file" PLEASE HELP 

[Jim Wilde]

Moderator: please transfer this to the Lightroom Classic forum.