Issue with'Cannot read property 'valueOf' of null' in auto_scheduling.js

Issue with’Cannot read property ‘valueOf’ of null’ , error from updateParentsAndCallEvents function in autoscheduler

We understand that the error is because that particular task is not having a start date ,
but we have many tasks which does not have a start date and chart seems to render fine. ,
would like to get your help on understanding what is the exact condition which triggers the above function to be called .and would like to know if it is mandatory for all tasks to have a start date.

Hi Ajith Thomas,
we received your request in the customer tech support and asked for data to reproduce the issue. Please, check your email and send us the details so that we can repeat the issue. You can either reply to the email from our customer support or you can post the necessary info here. Any option will do.