I gets 0 drop in chaos rift 1 while wearing lucky stone +7 and using normal combat buff

If your bag icon is red(not the weight but the bag icon itself) when you went to Chaos Rift I, you would not be able to obtain any loot that your pet is picking up for you, and if that is the case, I would highly recommend making some space to your inventory by either having some of them sold, transferred to your storage, or have them deleted. Considering that you can only enter the Chaos Rift I for a limited time per week, I highly recommend double-checking things in order for your resources to not go to waste.

 

On the other hand, if your inventory is not in that state when you entered the Chaos Rift, you may wanna contact their Support Team for your concern to be investigated.