Implementing 2 datepicker gives error.

[adyontech]

I am trying to implement two datepicker in a same component, one of them is working fine but other one is creating this error...

ERROR TypeError: this.parseValue is not a function
    at DatePicker.raiseOnChange (datePicker.js:102)
    at DatePickerPanel.eval [as _onChange] (datePicker.js:144)
    at DatePickerPanel.pushChangedValue (datePickerPanel.js:82)
    at DatePickerPanel.set [as date] (datePickerPanel.js:42)
    at Object.eval [as handleEvent] (DatePickerPanel.html:5)
    at handleEvent (core.es5.js:11998)
    at callWithDebugContext (core.es5.js:13467)
    at Object.debugHandleEvent [as handleEvent] (core.es5.js:13055)
    at dispatchEvent (core.es5.js:8614)
    at eval (core.es5.js:10770)

it says error is in line DatePickerPanel.html:3