Got direct access- 4002 error in production for scheduled dashboard

[Fenil]

Hi everyone, 

We have multiple dashboard in prod environment, They are all scheduled on some specific time for loading,

So in one dashboard reload got failed after 11 minute and throw this error.

Connector error: The Socket transport's send loop completed gracefully. (DirectAccess-4002))

Please Let me know why it occured and How can I solve it.

Thanks,

Fenil Jain