Error "Out of Video Memory try allocating render resource"

I have the same problem…But mine of a different one. ue4 on my device is worked successfully before but now it giving me the same error and exiting. I can’t understand how it happening. but still, I want to know how to fix …plz help me.
my laptop specification:
Intel(R) I7 - processer.
Intel HD 4000 Graphics Card.
4GB RAM.