"FILENAME is damaged and cant't be opened. you should move it to the trash"
When I try to open certain documents on my Mac, mainly photos but I have recently experienced it with an App, I get the message "xxxx is damaged and cant't be opened. you should move it to the trash" has anyone came across this issue before and can assist?
Please see screen shot below for a better idea of the problem Im facing
Many thanks
MacBook Pro 13", macOS 10.13