Unable to upload photos and vids from iPhone

I apologize if this is a dumb question… I get an error when  I try to upload pix and vids from my iPhone. It began after I installed the My Cloud update. I get a pop up: “Cache size is not large enough to hold this file. Please increase cache size in device settings.” Is anyone else having this problem? How do I fix this?

MANY thanks in advance.

Welcome to the Community.

Within the app’s settings you will be provided an option to change the cache (Space) reserved for application to use.

Regards,