Server crashing

report:

---- Minecraft Crash Report ----
// Ouch. That hurt :(

Time: 7/19/16 7:50 PM
Description: Exception in server tick loop

java.net.UnknownHostException: epic.server
	at java.net.Inet6AddressImpl.lookupAllHostAddr(Native Method)
	at java.net.InetAddress$2.lookupAllHostAddr(Unknown Source)
	at java.net.InetAddress.getAddressesFromNameService(Unknown Source)
	at java.net.InetAddress.getAllByName0(Unknown Source)
	at java.net.InetAddress.getAllByName(Unknown Source)
	at java.net.InetAddress.getAllByName(Unknown Source)
	at java.net.InetAddress.getByName(Unknown Source)
	at ld.j(SourceFile:152)
	at net.minecraft.server.MinecraftServer.run(SourceFile:428)
	at java.lang.Thread.run(Unknown Source)


A detailed walkthrough of the error, its code path and all known details is as follows:
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-- System Details --
Details:
	Minecraft Version: 1.10.2
	Operating System: Windows 10 (amd64) version 10.0
	Java Version: 1.8.0_91, Oracle Corporation
	Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
	Memory: 798321112 bytes (761 MB) / 1029177344 bytes (981 MB) up to 1029177344 bytes (981 MB)
	JVM Flags: 2 total; -Xmx1024M -Xms1024M
	IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0
	Profiler Position: N/A (disabled)
	Is Modded: Unknown (can't tell)
	Type: Dedicated Server (map_server.txt)