I have a bedrock server running at home on a Windows 10 Pro PC. No load on that PC (Intel i7 850 + 16GB RAM), only the Minecraft bedrock server software.

I have some villagers (converted Zombie villagers in stalls - see attached screenshot) at my base.

There have been at least three occasions where the server software crashes while playing (server application closes by itself and I get disconnected). After I reopen the server and reconnect, I notice that villagers actually disappeared from their stalls. 

Which type of logs would you need to help with the investigation?