GuestBook App deployment failure with image name incorrect

Can you please help here. The task failed with error “Image is incorrect”
Screen shots provided. Am i missing anything.

@ajith633, while checking the screenshot it seems that you have used the image gcr.io/google_samples/gb-frontend:v4 instead of gcr.io/google-samples/gb-frontend:v4 . Here instead of "_ "you need to use “-” .