WARNING Entity is at 1811.3930123188193,-1967.5972037001613 (chunk 113,-123) but was stored in chunk

Code:

18.05 20:14:19 [Server] WARNING Entity is at 1811.3930123188193,-1967.5972037001613 (chunk 113,-123) but was stored in chunk 112,-123
18.05 20:14:19 [Server] WARNING Wrong location for net.minecraft.server.EntityEnderman@3c227 in world 'CastleWars'!
18.05 20:14:18 [Server] WARNING Entity is at 1811.3930123188193,-1967.5972037001613 (chunk 113,-123) but was stored in chunk 112,-123
18.05 20:14:18 [Server] WARNING Wrong location for net.minecraft.server.EntityEnderman@3c1f5 in world 'CastleWars'!
18.05 20:14:10 [Server] INFO Connection reset
18.05 20:14:06 [Server] WARNING Entity is at 1811.3930123188193,-1967.5972037001613 (chunk 113,-123) but was stored in chunk 112,-123
18.05 20:14:06 [Server] WARNING Wrong location for net.minecraft.server.EntityEnderman@3bddc in world 'CastleWars'!
18.05 20:14:06 [Server] WARNING Can't keep up! Did the system time change, or is the server overloaded?
18.05 20:14:02 [Server] WARNING Can't keep up! Did the system time change, or is the server overloaded?

What do these mean and are they harmful to the server?

anyone?

EDIT by Moderator: merged posts, please use the edit button instead of double posting.

 

omg Shanko whats up bro XD I have been on ur server remember me???
Karatetoes!!! dude ur server is le best fyi and I like ur futurama skin
nice bro and sry if this comment was random XD

 

I get these a lot on my server, mainly with arrows. Yours has to do with an Enderman teleporting to an uncharted area of the map, I believe. No, it shouldn't be harmful. I would look into the issue more if it persists.