[WARNING] Exception in thread "Craft Scheduler Thread - 8"

[WARNING] org.apache.commons.lang.UnhandledException: Plugin ProPractice v7.7 generated an exception while executing task 40

at org.bukkit.craftbukkit.v1_8_R3.scheduler.CraftAsyncTask.run(CraftAsyncTask.java:57)

at org.github.paperspigot.ServerSchedulerReportingWrapper.run(ServerSchedulerReportingWrapper.java:22)

at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)

at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)

at java.lang.Thread.run(Thread.java:813)

Caused by: java.lang.NullPointerException

at sv.file14.propractice.iIIiiIiIiIIIiIiIiiIIí.IIiiiiiiiIiiIIiIiIiií(Unknown Source)

at sv.file14.propractice.iIIiiIiIiIIIiIiIiiIIí$$Lambda$73.00000000DA1A1D60.run(Unknown Source)

at org.bukkit.craftbukkit.v1_8_R3.scheduler.CraftTask.run(CraftTask.java:59)

at org.bukkit.craftbukkit.v1_8_R3.scheduler.CraftAsyncTask.run(CraftAsyncTask.java:53)

... 4 more

[ERROR] Could not pass event InventoryClickEvent to ProPractice v7.7

org.bukkit.event.EventException

at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:292) ~[uSpigot.jar:1.8.8]

at co.aikar.timings.TimedEventExecutor.execute(TimedEventExecutor.java:78) ~[uSpigot.jar:1.8.8]

at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:88) ~[uSpigot.jar:1.8.8]

at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:509) ~[uSpigot.jar:1.8.8]

at net.minecraft.server.v1_8_R3.PlayerConnection.a(PlayerConnection.java:1674) ~[uSpigot.jar:1.8.8]

at net.minecraft.server.v1_8_R3.PacketPlayInWindowClick.a(PacketPlayInWindowClick.java:20) ~[uSpigot.jar:1.8.8]

at net.minecraft.server.v1_8_R3.PacketPlayInWindowClick.a(PacketPlayInWindowClick.java:7) ~[uSpigot.jar:1.8.8]

at net.minecraft.server.v1_8_R3.PlayerConnectionUtils.lambda$ensureMainThread$0(PlayerConnectionUtils.java:6) ~[uSpigot.jar:1.8.8]

at net.minecraft.server.v1_8_R3.PlayerConnectionUtils$$Lambda$114.00000000E0053AC0.run(Unknown Source) ~[?:?]

at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) ~[?:1.8.0_212]

at java.util.concurrent.FutureTask.run(FutureTask.java:266) ~[?:1.8.0_212]

at net.minecraft.server.v1_8_R3.SystemUtils.a(SourceFile:44) ~[uSpigot.jar:1.8.8]

at net.minecraft.server.v1_8_R3.MinecraftServer.lambda$startTickloop$1(MinecraftServer.java:598) ~[uSpigot.jar:1.8.8]

at net.minecraft.server.v1_8_R3.MinecraftServer$$Lambda$77.00000000D908DCC0.run(Unknown Source) ~[?:?]

at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) [?:1.8.0_212]

at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) [?:1.8.0_212]

at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) [?:1.8.0_212]

at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) [?:1.8.0_212]

at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) [?:1.8.0_212]

at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) [?:1.8.0_212]

at java.lang.Thread.run(Thread.java:813) [?:1.8.0_212]

Caused by: java.lang.NullPointerException

at sv.file14.propractice.iIiiIiiIIIiIIIIIIIIií.<init>(Unknown Source) ~[?:?]

at sv.file14.propractice.iIiIiIIiIIIiIiiIiiiIí.<init>(Unknown Source) ~[?:?]

at sv.file14.propractice.IIiiIIIiIiIiiIiiiiiií.IiIIiIiIIIIIIIIIiiIií(Unknown Source) ~[?:?]

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_212]

at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_212]

at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_212]

at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_212]

at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:290) ~[uSpigot.jar:1.8.8]

... 20 more