[00:25:37 ERROR] [Sponge]: The Scheduler tried to run the task nuvotifier-A-85 owned by Plugin{id=nuvotifier, name=NuVotifier, version=2.3.5, source=mods/serious-nuvotifier-universal-2.3.5.jar}, but an error occured.
java.lang.NoClassDefFoundError: org/spongepowered/api/event/cause/NamedCause
at com.vexsoftware.votifier.sponge.VotifierPlugin$3.run(VotifierPlugin.java:382) ~[VotifierPlugin$3.class:?]
at org.spongepowered.api.scheduler.Task$Builder.lambda$execute$0(Task.java:139) ~[Task$Builder.class:1.12.2-7.1.0-BETA-48]
at org.spongepowered.common.scheduler.SchedulerBase.lambda$startTask$0(SchedulerBase.java:186) ~[SchedulerBase.class:1.12.2-7.1.0-BETA-48]
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) [?:1.8.0_151]
at java.util.concurrent.FutureTask.run(FutureTask.java:266) [?:1.8.0_151]
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) [?:1.8.0_151]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) [?:1.8.0_151]
at java.lang.Thread.run(Thread.java:748) [?:1.8.0_151]
Caused by: java.lang.ClassNotFoundException: org.spongepowered.api.event.cause.NamedCause
at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:191) ~[launchwrapper-1.12.jar:?]
at java.lang.ClassLoader.loadClass(ClassLoader.java:424) ~[?:1.8.0_151]
at java.lang.ClassLoader.loadClass(ClassLoader.java:357) ~[?:1.8.0_151]
... 8 more
Caused by: java.lang.NullPointerException