A connection to server has failed( Status =500)

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Hi all 

Has any one experienced the below message in their cloud environment . We randomly receive this message which goes away by itself . We tried to identify a specific pattern/page/flow where this would occur, however this seems to be very random and cannot be re-produced when intended

A connection to server has failed( Status =500) 

Has anyone else faced this issue ? What was the action plan carried out 

Thanks in advance

Regards

Rohan