Error occurred while evaluating expression =pv!alerts.alertLevel (Invalid index: Cannot index property 'alertLevel' of type Text into null value of type PR_alert?list)

Question

Hi guys, 
 
 I am having this error on my server log on production environment: "Error occurred while evaluating expression: =pv!alerts.alertLevel (Invalid index: Cannot index property 'alertLevel' of type Text into null value of type PR_alert?list)", but i am not receiving any alert message. 
 Do you have any ideia why the error is not appearing in the alerts and why is happening? And how can I see where the error is happening in the main process? 
 
 Regards, 
 Guilherme

Jamal Case · Answer

pv!alerts.alertLeve may be null. Doing dot notation will throw an error for null values. I would use the index or property function for error handling. Check your alerts in runtime data to see where this error is coming from.