Date Format is not valid or outside the supported range error



I am trying to add 3 business days into the value of a date field and update another date field using this new value. But workflow is always in 'waiting' status as it is showing an error 'Date/Time format is not valid, or the value is outside the supported range'. When I click on the details, it is showing that the days are added properly, but year, for some reason, has changed and it is now 0001. Can someone please tell me what is the problem here? It will be greatly appreciated. I am also attaching a screenshot of the error that is showing.

P.S:- Error is showing in both 2013 and 2015 version.

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