Hi shruti mishra,
What's the SDK version of power_manager_hal_demo? Seems that it was the demo in SDK1.3.0.
Would you please download the latest MCUXpresso SDK_2.5.0_MK24FN1M0xxx12?
The power_manager demo can be found in it's folder(...\SDK_2.5.0_MK24FN1M0xxx12\boards\frdmk64f\demo_apps\power_manager)
Please follow the setps descripted in readme file of power_manager example.

Best Regards,
Robin
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