fix

app/models/communication/website/with_screenshot.rb

@@ -8,6 +8,7 @@ module Communication::Website::WithScreenshot
   def screenshot!
     return if url.blank?
     screenshot_url = Screenshot.capture(url)
+    return if screenshot_url.blank?
     downloaded_image = URI.open(screenshot_url)
     self.screenshot.attach  io: downloaded_image, 
                             filename: "screenshot.png"