Check app log:
traces
| project timestamp, cloud_RoleName, appName, operation_Name, message
| where timestamp > ago(15m)
| where cloud_RoleName =~ 'az-203-todo-function' and operation_Name == 'OverdueHandler'
| order by timestamp desc
| take 20
List invocations:
requests
| project timestamp, id, operation_Name, success, resultCode, duration, operation_Id, cloud_RoleName, invocationId=customDimensions['InvocationId']
| where timestamp > ago(5m)
| where cloud_RoleName =~ 'az-203-todo-function' and operation_Name == 'OverdueHandler'
| order by timestamp desc
| take 20