Why did my server's Zombie be destroyed and leave a corpse backpack , I don't know where the setting is wrong. This is my 

{
"Spawn Settings": {
"Spawn near players": true,
"Min pop for near player spawn": 10,
"Min distance from player": 100.0,
"Max distance from player": 200.0,
"Spawn Time": 19.8,
"Destroy Time": 19.8,
"Zombie Settings": {
"Murderer Population (total amount)": 0,
"Murderer Health": 100.0,
"Scarecrow Population (total amount)": 1000,
"Scarecrow Health": 200.0
},
"Chance Settings": {
"Chance per cycle": 100.0,
"Days betewen spawn": 0
}
},
"Destroy Settings": {
"Leave Corpse, when destroyed": false,
"Leave Corpse, when killed by player": true,
"Half bodybag despawn time": true,
"Quick destroy corpses": true
},
"Behaviour Settings": {
"Attack sleeping players": false,
"Zombies attacked by outpost sentries": true,
"Ignore Human NPCs": true,
"Ignored entities (full entity shortname)": []
},
"Broadcast Settings": {
"Broadcast spawn amount": true,
"Broadcast types separately": true
}
}

Merged post

Does anyone know what went wrong😭

Perhaps because you are spawning and destroying at same time

"Spawn Time": 19.8,
"Destroy Time": 19.8

Are you still having issues?