[08:09:05] [User Authenticator #47/WARN]: Exception while running UUIDFetcher
[08:09:05] [User Authenticator #47/WARN]: java.io.IOException: Server returned HTTP response code: 429 for URL: https://api.mojang.com/profiles/minecraft
[08:09:05] [User Authenticator #47/WARN]: 	at sun.net.www.protocol.http.HttpURLConnection.getInputStream0(HttpURLConnection.java:1838)
[08:09:05] [User Authenticator #47/WARN]: 	at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1439)
[08:09:05] [User Authenticator #47/WARN]: 	at sun.net.www.protocol.https.HttpsURLConnectionImpl.getInputStream(HttpsURLConnectionImpl.java:254)
[08:09:05] [User Authenticator #47/WARN]: 	at com.flabaliki.simpleprefix.UUIDFetcher.call(UUIDFetcher.java:39)
[08:09:05] [User Authenticator #47/WARN]: 	at com.flabaliki.simpleprefix.SimplePrefix.onPreLogin(SimplePrefix.java:130)
[08:09:05] [User Authenticator #47/WARN]: 	at sun.reflect.GeneratedMethodAccessor211.invoke(Unknown Source)
[08:09:05] [User Authenticator #47/WARN]: 	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
[08:09:05] [User Authenticator #47/WARN]: 	at java.lang.reflect.Method.invoke(Method.java:483)
[08:09:05] [User Authenticator #47/WARN]: 	at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:298)
[08:09:05] [User Authenticator #47/WARN]: 	at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62)
[08:09:05] [User Authenticator #47/WARN]: 	at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:509)
[08:09:05] [User Authenticator #47/WARN]: 	at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:491)
[08:09:05] [User Authenticator #47/WARN]: 	at net.minecraft.server.v1_7_R4.ThreadPlayerLookupUUID.fireLoginEvents(ThreadPlayerLookupUUID.java:79)
[08:09:05] [User Authenticator #47/WARN]: 	at net.minecraft.server.v1_7_R4.ThreadPlayerLookupUUID.run(ThreadPlayerLookupUUID.java:32)
[08:09:05] [User Authenticator #47/ERROR]: Could not pass event AsyncPlayerPreLoginEvent to SimplePrefix v2.3.4
org.bukkit.event.EventException
	at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:302) ~[Spigot.jar:git-Spigot-1.7.9-R0.2-207-g03373bb]
	at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62) ~[Spigot.jar:git-Spigot-1.7.9-R0.2-207-g03373bb]
	at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:509) [Spigot.jar:git-Spigot-1.7.9-R0.2-207-g03373bb]
	at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:491) [Spigot.jar:git-Spigot-1.7.9-R0.2-207-g03373bb]
	at net.minecraft.server.v1_7_R4.ThreadPlayerLookupUUID.fireLoginEvents(ThreadPlayerLookupUUID.java:79) [Spigot.jar:git-Spigot-1.7.9-R0.2-207-g03373bb]
	at net.minecraft.server.v1_7_R4.ThreadPlayerLookupUUID.run(ThreadPlayerLookupUUID.java:32) [Spigot.jar:git-Spigot-1.7.9-R0.2-207-g03373bb]
Caused by: java.lang.NullPointerException
	at com.flabaliki.simpleprefix.SimplePrefix.onPreLogin(SimplePrefix.java:135) ~[?:?]
	at sun.reflect.GeneratedMethodAccessor211.invoke(Unknown Source) ~[?:?]
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_05]
	at java.lang.reflect.Method.invoke(Method.java:483) ~[?:1.8.0_05]
	at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:298) ~[Spigot.jar:git-Spigot-1.7.9-R0.2-207-g03373bb]
	... 5 more