How to know if an image does not exist within Asset Manager?

Help and Feedback Game Design Support
#1

I’m creating ImageLabels dynamically, through its name:

ImageLabel.Image = 'rbxgameasset://Images/' .. ImageName

But if the image does not exist within the Assent Manager, nothing will be shown.
When this occurs, I would like to replace the image with another generic image.
How to do this?