AppInsight Log errors not showing issue

I have configured Azure app insight to my web application. I have added code as below.

  catch (Exception serverEx)
                    {
                        _logger.LogError("hello world");
                        return StatusCode(StatusCodes.Status202Accepted, serverEx.Message);
                    }

This is visible in traces.

This is an exception So I need to load it in exceptions. This is my query.

let start=datetime("2022-02-24T14:23:00.000Z");
let end=datetime("2022-02-25T14:23:00.000Z");
let timeGrain=5m;
let dataset=exceptions 
| where timestamp > start and timestamp < end
| where client_Type == "Browser"
;
dataset

This query not getting any result. Even I type Exceptions its not getting any result.