io.netty.handler.timeout.ReadTimeoutException

Please help! When i try join my Bukkit 1.7.5 server it says io.nettu.handler.timeout.readtimeout.exception!

Last login: Thu Oct 2 13:31:24 on ttys000
/Users/khan4167/Desktop/Bukkit/start.command ; exit;
karamats-mbp:~ khan4167$ /Users/khan4167/Desktop/Bukkit/start.command ; exit;
Loading libraries, please wait...
[13:33:12 INFO]: Starting minecraft server version 1.7.5
[13:33:13 INFO]: Loading properties
[13:33:13 INFO]: Default game type: SURVIVAL
[13:33:13 INFO]: Generating keypair
[13:33:13 INFO]: Starting Minecraft server on *:25566
[13:33:13 INFO]: This server is running CraftBukkit version git-Bukkit-1.7.2-R0.3-11-g08fad7a-b3036jnks (MC: 1.7.5) (Implementing API version 1.7.5-R0.1-SNAPSHOT)
[13:33:13 INFO]: Preparing level "false"
[13:33:13 INFO]: Preparing start region for level 0 (Seed: 2326910826664500010)
[13:33:14 WARN]: Could not get information about this CraftBukkit version; perhaps you are running a custom one?: IOException
[13:33:14 INFO]: Preparing spawn area: 72%
[13:33:14 INFO]: Preparing start region for level 1 (Seed: 7774137059618198409)
[13:33:15 WARN]: Could not get latest artifact information: IOException
[13:33:15 INFO]: Preparing start region for level 2 (Seed: 7774137059618198409)
[13:33:15 INFO]: Server permissions file permissions.yml is empty, ignoring it

[13:33:15 INFO]: Done (2.259s)! For help, type "help" or "?"




please help!