Situation

In ABn Testing app, we are throwing the exception to UI, for instance invalid license, unauthorized API gateway when getting the test results, they made the app broken and can't use anymore.

Same situation happened in Pages app, because there is a decoration column "AB testing status"

Approach/ Proposal

• The error should not break the app
• Currently, it will displayed multiple times due to exception thrown for each AB test. So a notification should displayed one time

Scenarios

• Use case --> Invalid apiGateWayURL, timeout connection or NullPointerException...
• Use case 2 --> The license becomes invalid after 1-year (for example) if not re-newed  

AC

• Exception should not throw on the screen
• General error message like "Unable to retrieve test results" displayed on each row if exception happens (see attachment abn-app-error and page-app-error)