Etherscan.io data shows that Ethereum today suspected that a transaction fee abnormal transaction occurred. The address starting with 0x144 transferred 0.36 ETH to the address starting with 0xc46, but the transaction fee was as high as 21.14 ETH (about 3065 USD). The block height of this transaction is: 9087416, the transaction hash value is 0xb473 … c337f18. It is reported that at the beginning of 2019, a transaction with a handling fee of 2100 ETH was packaged at a block height of 7238290. It is unknown at this time what caused this error.