I'm guessing you have two sets of metal rings???
Make sure the bolt threads are facing 'in' towards the center of the wheel.
Also, try to get the sprocket centered as perfect as possible before
totally tightening the bolts. You can see if it's centered by spinning the wheel & watching the tips of the sprocket teeth.
Tighten the bolts in a 'star' pattern a little; then re-check for center, then tighten them a little more & re-check again....
You need that sprocket to spin as perfectly straight as possible to avoid chain troubles!