idk what is happening help pls
Description: Exception in server tick loop
java.net.UnknownHostException: teheransana.minecraftserver.net
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 wd.d(SourceFile:153)
at net.minecraft.server.MinecraftServer.run(SourceFile:628)
at java.lang.Thread.run(Unknown Source)