TSR Integration->Classes & Payroll->Server error is displaying after selecting any control on page.

Environment - Local (wt-stage), Company - LONG, CityOfLakeWorth

Steps:
1] Login to the application as a partner.
2] Click on "Assign Classes & Payroll" tile.
3] Try to search any employee using search field or click on pagination numbers .

Actual Result:
Server error is displaying.
Expected Result:
Server error should not be display.
Refer attached screenshot and error log for more details.

Cc: Sushodhan Vaishampayan, Komal Barde, Saurabh Sablaka, Prasad Pise