AppInsights to check exceptions

exceptions
| where timestamp > datetime("2021-10-31T19:43:54.771Z") and timestamp < datetime("2021-11-30T19:43:54.771Z")
| where * has "<EXCEPTION MESSAGE>"
| extend requestPath = tostring(customDimensions["RequestPath"])
| summarize count(), min(timestamp), max(timestamp) by user_Id, requestPath