org.spigotmc.authlib.exceptions.AuthenticationUnavailableException: Cannot contact authentication server
	at org.spigotmc.authlib.yggdrasil.YggdrasilAuthenticationService.makeRequest(YggdrasilAuthenticationService.java:70) ~[spigot1387.jar:git-Spigot-1387]
	at org.spigotmc.authlib.yggdrasil.YggdrasilMinecraftSessionService.hasJoinedServer(YggdrasilMinecraftSessionService.java:74) ~[spigot1387.jar:git-Spigot-1387]
	at net.minecraft.server.v1_7_R2.ThreadPlayerLookupUUID.run(ThreadPlayerLookupUUID.java:37) [spigot1387.jar:git-Spigot-1387]
Caused by: java.net.UnknownHostException: sessionserver.mojang.com
	at java.net.AbstractPlainSocketImpl.connect(Unknown Source) ~[?:1.7.0_51]
	at java.net.SocksSocketImpl.connect(Unknown Source) ~[?:1.7.0_51]
	at java.net.Socket.connect(Unknown Source) ~[?:1.7.0_51]
	at sun.security.ssl.SSLSocketImpl.connect(Unknown Source) ~[?:1.7.0_51]
	at sun.net.NetworkClient.doConnect(Unknown Source) ~[?:1.7.0_51]
	at sun.net.www.http.HttpClient.openServer(Unknown Source) ~[?:1.7.0_51]
	at sun.net.www.http.HttpClient.openServer(Unknown Source) ~[?:1.7.0_51]
	at sun.net.www.protocol.https.HttpsClient.<init>(Unknown Source) ~[?:1.7.0_51]
	at sun.net.www.protocol.https.HttpsClient.New(Unknown Source) ~[?:1.7.0_51]
	at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.getNewHttpClient(Unknown Source) ~[?:1.7.0_51]
	at sun.net.www.protocol.http.HttpURLConnection.plainConnect(Unknown Source) ~[?:1.7.0_51]
	at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(Unknown Source) ~[?:1.7.0_51]
	at sun.net.www.protocol.http.HttpURLConnection.getInputStream(Unknown Source) ~[?:1.7.0_51]
	at sun.net.www.protocol.https.HttpsURLConnectionImpl.getInputStream(Unknown Source) ~[?:1.7.0_51]
	at org.spigotmc.authlib.HttpAuthenticationService.performGetRequest(HttpAuthenticationService.java:126) ~[spigot1387.jar:git-Spigot-1387]
	at org.spigotmc.authlib.yggdrasil.YggdrasilAuthenticationService.makeRequest(YggdrasilAuthenticationService.java:53) ~[spigot1387.jar:git-Spigot-1387]
	... 2 more
[22:26:03] [User Authenticator #161/WARN]: Exception verifying ICEMAN_25
org.spigotmc.authlib.exceptions.AuthenticationUnavailableException: Cannot contact authentication server
	at org.spigotmc.authlib.yggdrasil.YggdrasilAuthenticationService.makeRequest(YggdrasilAuthenticationService.java:70) ~[spigot1387.jar:git-Spigot-1387]
	at org.spigotmc.authlib.yggdrasil.YggdrasilMinecraftSessionService.hasJoinedServer(YggdrasilMinecraftSessionService.java:74) ~[spigot1387.jar:git-Spigot-1387]
	at net.minecraft.server.v1_7_R2.ThreadPlayerLookupUUID.run(ThreadPlayerLookupUUID.java:37) [spigot1387.jar:git-Spigot-1387]
Caused by: java.net.UnknownHostException: sessionserver.mojang.com
	at java.net.AbstractPlainSocketImpl.connect(Unknown Source) ~[?:1.7.0_51]
	at java.net.SocksSocketImpl.connect(Unknown Source) ~[?:1.7.0_51]
	at java.net.Socket.connect(Unknown Source) ~[?:1.7.0_51]
	at sun.security.ssl.SSLSocketImpl.connect(Unknown Source) ~[?:1.7.0_51]
	at sun.net.NetworkClient.doConnect(Unknown Source) ~[?:1.7.0_51]
	at sun.net.www.http.HttpClient.openServer(Unknown Source) ~[?:1.7.0_51]
	at sun.net.www.http.HttpClient.openServer(Unknown Source) ~[?:1.7.0_51]
	at sun.net.www.protocol.https.HttpsClient.<init>(Unknown Source) ~[?:1.7.0_51]
	at sun.net.www.protocol.https.HttpsClient.New(Unknown Source) ~[?:1.7.0_51]
	at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.getNewHttpClient(Unknown Source) ~[?:1.7.0_51]
	at sun.net.www.protocol.http.HttpURLConnection.plainConnect(Unknown Source) ~[?:1.7.0_51]
	at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(Unknown Source) ~[?:1.7.0_51]
	at sun.net.www.protocol.http.HttpURLConnection.getInputStream(Unknown Source) ~[?:1.7.0_51]
	at sun.net.www.protocol.https.HttpsURLConnectionImpl.getInputStream(Unknown Source) ~[?:1.7.0_51]
	at org.spigotmc.authlib.HttpAuthenticationService.performGetRequest(HttpAuthenticationService.java:126) ~[spigot1387.jar:git-Spigot-1387]
	at org.spigotmc.authlib.yggdrasil.YggdrasilAuthenticationService.makeRequest(YggdrasilAuthenticationService.java:53) ~[spigot1387.jar:git-Spigot-1387]
	... 2 more
[22:26:03] [User Authenticator #158/WARN]: Exception verifying tkderbrad
org.spigotmc.authlib.exceptions.AuthenticationUnavailableException: Cannot contact authentication server
	at org.spigotmc.authlib.yggdrasil.YggdrasilAuthenticationService.makeRequest(YggdrasilAuthenticationService.java:70) ~[spigot1387.jar:git-Spigot-1387]
	at org.spigotmc.authlib.yggdrasil.YggdrasilMinecraftSessionService.hasJoinedServer(YggdrasilMinecraftSessionService.java:74) ~[spigot1387.jar:git-Spigot-1387]
	at net.minecraft.server.v1_7_R2.ThreadPlayerLookupUUID.run(ThreadPlayerLookupUUID.java:37) [spigot1387.jar:git-Spigot-1387]
Caused by: java.net.UnknownHostException: sessionserver.mojang.com
	at java.net.AbstractPlainSocketImpl.connect(Unknown Source) ~[?:1.7.0_51]
	at java.net.SocksSocketImpl.connect(Unknown Source) ~[?:1.7.0_51]
	at java.net.Socket.connect(Unknown Source) ~[?:1.7.0_51]
	at sun.security.ssl.SSLSocketImpl.connect(Unknown Source) ~[?:1.7.0_51]
	at sun.net.NetworkClient.doConnect(Unknown Source) ~[?:1.7.0_51]
	at sun.net.www.http.HttpClient.openServer(Unknown Source) ~[?:1.7.0_51]
	at sun.net.www.http.HttpClient.openServer(Unknown Source) ~[?:1.7.0_51]
	at sun.net.www.protocol.https.HttpsClient.<init>(Unknown Source) ~[?:1.7.0_51]
	at sun.net.www.protocol.https.HttpsClient.New(Unknown Source) ~[?:1.7.0_51]
	at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.getNewHttpClient(Unknown Source) ~[?:1.7.0_51]
	at sun.net.www.protocol.http.HttpURLConnection.plainConnect(Unknown Source) ~[?:1.7.0_51]
	at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(Unknown Source) ~[?:1.7.0_51]
	at sun.net.www.protocol.http.HttpURLConnection.getInputStream(Unknown Source) ~[?:1.7.0_51]
	at sun.net.www.protocol.https.HttpsURLConnectionImpl.getInputStream(Unknown Source) ~[?:1.7.0_51]
	at org.spigotmc.authlib.HttpAuthenticationService.performGetRequest(HttpAuthenticationService.java:126) ~[spigot1387.jar:git-Spigot-1387]
	at org.spigotmc.authlib.yggdrasil.YggdrasilAuthenticationService.makeRequest(YggdrasilAuthenticationService.java:53) ~[spigot1387.jar:git-Spigot-1387]
	... 2 more
[22:26:03] [User Authenticator #159/WARN]: Exception verifying longwinner
org.spigotmc.authlib.exceptions.AuthenticationUnavailableException: Cannot contact authentication server
	at org.spigotmc.authlib.yggdrasil.YggdrasilAuthenticationService.makeRequest(YggdrasilAuthenticationService.java:70) ~[spigot1387.jar:git-Spigot-1387]
	at org.spigotmc.authlib.yggdrasil.YggdrasilMinecraftSessionService.hasJoinedServer(YggdrasilMinecraftSessionService.java:74) ~[spigot1387.jar:git-Spigot-1387]
	at net.minecraft.server.v1_7_R2.ThreadPlayerLookupUUID.run(ThreadPlayerLookupUUID.java:37) [spigot1387.jar:git-Spigot-1387]
Caused by: java.net.UnknownHostException: sessionserver.mojang.com
	at java.net.AbstractPlainSocketImpl.connect(Unknown Source) ~[?:1.7.0_51]
	at java.net.SocksSocketImpl.connect(Unknown Source) ~[?:1.7.0_51]
	at java.net.Socket.connect(Unknown Source) ~[?:1.7.0_51]
	at sun.security.ssl.SSLSocketImpl.connect(Unknown Source) ~[?:1.7.0_51]
	at sun.net.NetworkClient.doConnect(Unknown Source) ~[?:1.7.0_51]
	at sun.net.www.http.HttpClient.openServer(Unknown Source) ~[?:1.7.0_51]
	at sun.net.www.http.HttpClient.openServer(Unknown Source) ~[?:1.7.0_51]
	at sun.net.www.protocol.https.HttpsClient.<init>(Unknown Source) ~[?:1.7.0_51]
	at sun.net.www.protocol.https.HttpsClient.New(Unknown Source) ~[?:1.7.0_51]
	at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.getNewHttpClient(Unknown Source) ~[?:1.7.0_51]
	at sun.net.www.protocol.http.HttpURLConnection.plainConnect(Unknown Source) ~[?:1.7.0_51]
	at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(Unknown Source) ~[?:1.7.0_51]
	at sun.net.www.protocol.http.HttpURLConnection.getInputStream(Unknown Source) ~[?:1.7.0_51]
	at sun.net.www.protocol.https.HttpsURLConnectionImpl.getInputStream(Unknown Source) ~[?:1.7.0_51]
	at org.spigotmc.authlib.HttpAuthenticationService.performGetRequest(HttpAuthenticationService.java:126) ~[spigot1387.jar:git-Spigot-1387]
	at org.spigotmc.authlib.yggdrasil.YggdrasilAuthenticationService.makeRequest(YggdrasilAuthenticationService.java:53) ~[spigot1387.jar:git-Spigot-1387]
	... 2 more
[22:26:03] [Server thread/INFO]: GameProfile{id='null', name='tkderbrad'} (/184.63.212.113:50121) lost connection: Failed to verify username!
[22:26:03] [Server thread/INFO]: GameProfile{id='null', name='ICEMAN_25'} (/216.14.148.206:54386) lost connection: Failed to verify username!
[22:26:03] [Server thread/INFO]: GameProfile{id='null', name='LoganHam213'} (/71.93.77.31:59007) lost connection: Failed to verify username!
[22:26:03] [Server thread/INFO]: Jack_Birding lost connection: Internal Exception: net.minecraft.util.io.netty.handler.timeout.ReadTimeoutException
[22:26:03] [Server thread/INFO]: Jack_Birding left the game
[22:26:04] [User Authenticator #162/INFO]: Disconnecting GameProfile{id='null', name='longwinner'} (/68.196.163.60:65326): Failed to verify username!
[22:26:04] [User Authenticator #162/WARN]: Exception verifying longwinner
org.spigotmc.authlib.exceptions.AuthenticationUnavailableException: Cannot contact authentication server
	at org.spigotmc.authlib.yggdrasil.YggdrasilAuthenticationService.makeRequest(YggdrasilAuthenticationService.java:70) ~[spigot1387.jar:git-Spigot-1387]
	at org.spigotmc.authlib.yggdrasil.YggdrasilMinecraftSessionService.hasJoinedServer(YggdrasilMinecraftSessionService.java:74) ~[spigot1387.jar:git-Spigot-1387]
	at net.minecraft.server.v1_7_R2.ThreadPlayerLookupUUID.run(ThreadPlayerLookupUUID.java:37) [spigot1387.jar:git-Spigot-1387]
Caused by: java.net.UnknownHostException: sessionserver.mojang.com
	at java.net.AbstractPlainSocketImpl.connect(Unknown Source) ~[?:1.7.0_51]
	at java.net.SocksSocketImpl.connect(Unknown Source) ~[?:1.7.0_51]
	at java.net.Socket.connect(Unknown Source) ~[?:1.7.0_51]
	at sun.security.ssl.SSLSocketImpl.connect(Unknown Source) ~[?:1.7.0_51]
	at sun.net.NetworkClient.doConnect(Unknown Source) ~[?:1.7.0_51]
	at sun.net.www.http.HttpClient.openServer(Unknown Source) ~[?:1.7.0_51]
	at sun.net.www.http.HttpClient.openServer(Unknown Source) ~[?:1.7.0_51]
	at sun.net.www.protocol.https.HttpsClient.<init>(Unknown Source) ~[?:1.7.0_51]
	at sun.net.www.protocol.https.HttpsClient.New(Unknown Source) ~[?:1.7.0_51]
	at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.getNewHttpClient(Unknown Source) ~[?:1.7.0_51]
	at sun.net.www.protocol.http.HttpURLConnection.plainConnect(Unknown Source) ~[?:1.7.0_51]
	at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(Unknown Source) ~[?:1.7.0_51]
	at sun.net.www.protocol.http.HttpURLConnection.getInputStream(Unknown Source) ~[?:1.7.0_51]
	at sun.net.www.protocol.https.HttpsURLConnectionImpl.getInputStream(Unknown Source) ~[?:1.7.0_51]
	at org.spigotmc.authlib.HttpAuthenticationService.performGetRequest(HttpAuthenticationService.java:126) ~[spigot1387.jar:git-Spigot-1387]
	at org.spigotmc.authlib.yggdrasil.YggdrasilAuthenticationService.makeRequest(YggdrasilAuthenticationService.java:53) ~[spigot1387.jar:git-Spigot-1387]