No SD Card message

Hi all first post, Can anyone shed any light on the error message i am getting. I have a samsung S5 android phone and every time i log out of private mode i get 2 messages on my phone one from My Cloud “no SD card” and another from WD Photos " No SD Card". It is every time i close private mode a bit annoying.

It’s likely related to the storage/caching behavior of the apps when switching modes

thanks for reply but is there an answer to stop this happening and am i the only one with this problem?