React Redux MobiScroll Timeline Issue

I’m getting data from redux useSelector then passing that data to a local state variable on my component. Still I’m having this issue of read-only on start field.

 Uncaught TypeError: Cannot assign to read only property 'start' of object '#<Object>' at t._onEventDragStop [as eventDragEnd]

Here @Zsombor here’s my current issue with read-only fields