How to debug error code HTTP 500 -2130575336

Dec 31 2017 12:34 PM
Dear Sirs,
 
I've got the error listed above in a Sharepoint 2013 workflow.
 
Although the text  is quite clear
 
 
 
I am not able to understand which column generated that warning message.
 
Could you kindly suggest a method to find where the error arises?
 
Many thanks for your help.

Answers (3)