grifer

[valdemar11838]

hello i have a world with my self and i givet the ip to my friends but no one joined so i just played it for my self i was not playing for like 2 weeks and when i come back some one had exploded my server so i looked at the playerdata and log but the only thing i could se was this 

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[_Tarna_]

Like I said in the other post you made, you cannot read the old logs atm. Only the latest.log is. And the logs won't show who griefed your server anyways. It will just show chat logs, console logs, and plugin errors. You can look at the world's playerdata folder to see the uuid of people who have joined the server and then use a site like namemc.com to turn those uuids into a player name. 

Just whitelist your server so this won't happen again in the future.