Issues with Logs during Cloud storage to Bigquery Exports

[yogagit123]

I have created a CRON job to create bigquery exports and my GS bucket is in the same region as bigquery dataset.
When I run the job , I see the logs by Google app engine with HTTP return code 200 but the Bigquery Dataset : export logs does not appear.

Is there any access issues or where can be the details of error or success be seen