when create payslip system generate the below error installed all the dependencies,and change the addons but did not solved the error.
odoo 16 enterprise 


RPC_ERROR Odoo Server Error

Traceback (most recent call last):

  File "/home/developer/WS/odoo-16.0/odoo/ hr_contract.py ", line 290, in _generate_work_entries

    assert isinstance(date_start, datetime)

AssertionError

The above server error caused the following client error:

null