SSO>Chubb Selerix>Functional>Server error displaying for Beneficiary and Confirmation Statement

URL - https://mybenefits.biz/Platform/Login/Login
Company - Nexion

1] Login to the application as a Partner.
2] Search any employee, manage the employee.
3] Navigate to "Enroll Now" page.
4] Enroll in any of the Selerix plan, add spouse and child as a beneficiary and complete the enrollment.
5] In WorkTerra verify the "Beneficiary" and "Confirmation Statement" pages.

Actual Result:
Server error is displaying.
Refer attached screenshot and error log.

Cc: Aditya Vishwakarma, Jaideep Vinchurkar, Prasad Pise