SSO>TexasLife-Portal>Internal Server error is displaying and employee not able to complete enrollment at TexasLife end

Env - Stage
Company under test - Symphony for HSPL

1] Login as a employee to the application.
2] While traversing New Hire flow, click on "Enroll" button for TexasLife plan, employee get redirected to "TexasLife SSO" window.
3] Click on "Next" button on the first page.
4] On Next page Employee have to answer tobacco related questions.
5] Select radio button "Yes" or "No", click on Next button.

Actual Result:
"An internal server error...."
Expected Result:
Error should not be display.
Refer attached screenshot for more details.

Cc: Santosh Balid, Jaideep Vinchurkar, WT-Admin, Samir, Prasad Pise