We recently launched a mobile app and we use Salesforce Identity Management. ie all customers have a Salesforce user record and authentication is done is Salesforce. After the launch, some users were saying that they encountered issues when they tried to log in to the app - issues like blank screen with yellow bar at the top or login button that never lit up to be able to click on etc etc. These are issues that we are unable to reproduce by the way.
So we ran a report and found that some users were having issues logging in (report filter is Status not equal to Success). We then drilled down to their login history, we see that they seemed to have logged in successfully through the app then immediately followed by an error 'Invalid Nonce'. See screenshot below.
Has anyone see this 'Invalid Nonce' error before? What does it mean?