This issue arises from incomplete employee personal details. To resolve it, you'll need to:
Go to Personnel, Add/Update Employee, Per. Details.
Please ensure to key in the Date of Birth for all the employees.
Go to the Pay tab.
Select NO for contract details.
Those employees who are under contract choose YES for contract details.
Must have Contract Valid From and Contract Expired On date.
Note: Please refer to Payroll 2024.1 release notes for more details on the setup.