Scripture says GOD made both.
Genesis 1 states GOD created heaven and earth.
And there was darkness.
Light was not created until after there was darkness.
There was created darkness before there was created light.
And if light expels all darkness, then how can GOD (who is light) dwell in darkness?
And, not to get too far off thread topic ...... but there may be different types of darkness (just as there are different types of light - ie. not all light is visible).
Exodus 10:21 KJV
(21) And the LORD said unto Moses, Stretch out thine hand toward heaven, that there may be darkness over the land of Egypt, even darkness which may be felt.
This seems to be more than just a visual sensory.
“That they should seek the Lord, if haply they might feel after him, and find him, though he be not far from every one of us:”