Hello Pinconning1,
Welcome to Apple Support Communities. We understand that you're getting an error when you use scan, and go. We understand the importance of getting this issue resolved so you'll have fast, and easy shopping trips, so let's look into this concern together.
Are you experiencing this behavior with a specific app or multiple? Also, does it happen while being connected to Wi-Fi or cellular data?
Please try the steps in the following link, and let us know if that helps:
If an app unexpectedly quits, stops responding, or won’t open
We hope this information is useful. Kind regards.