Solidity code is as follows:

 contract TestLog {
Bytes constant internal EMPTY_BYTES=""; 
The event Logempty (bytes data); 
The function the Log () public {
Emit Logempty (EMPTY_BYTES); 
}
} 

Why each time you execute the Log function, in the event Log is 0 x20 in print? Should not be all zero?
Test online deployed good contracts, the event log link below
https://ropsten.etherscan.io/address/0xb0723e0943b7b10c985365df6aef983bc6eeb6d6#events