"ATTENTION: Error occurred while saving the resource data" on wcadmin

I am using Windchill PDMLink Release 12.1 and Datecode with CPS 12.1.1.2 Currently, I'm having some trouble adding an overview file to the workflows; even with wcadmin, I get the error below. What are the possible issues, and how can I solve them? Here are the errors that I faced ATTENTION: Error occurred while saving the resource data.