It is not unusual to see empty blocks (with 0, 1 or very few transactions) in the block chain.

Here is a very recent example.

https://www.blockchain.com/es/btc/block/00000000000000000003ca025b0f616f3c78635f3b8f7f45f791b308661ee0a9

What its the explanation of this? Why are miners generating empty blocks and renouncing to transaction fees?

Thanks!