Not working on spigot 1.12, using latest dev build of ucars

[RealmportalMC]

ould not pass event VehicleUpdateEvent to uCarsRace v4
org.bukkit.event.EventException: null
at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:306) ~[spigot-R0.1-596221bf2ff-9a1fc1e2eea-0ce77bc4b38.jar:git-Spigot-596221b-9a1fc1e]
at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62) ~[spigot-R0.1-596221bf2ff-9a1fc1e2eea-0ce77bc4b38.jar:git-Spigot-596221b-9a1fc1e]
at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:499) [spigot-R0.1-596221bf2ff-9a1fc1e2eea-0ce77bc4b38.jar:git-Spigot-596221b-9a1fc1e]
at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:484) [spigot-R0.1-596221bf2ff-9a1fc1e2eea-0ce77bc4b38.jar:git-Spigot-596221b-9a1fc1e]
at net.minecraft.server.v1_12_R1.EntityMinecartAbstract.B_(EntityMinecartAbstract.java:325) [spigot-R0.1-596221bf2ff-9a1fc1e2eea-0ce77bc4b38.jar:git-Spigot-596221b-9a1fc1e]
at net.minecraft.server.v1_12_R1.World.entityJoinedWorld(World.java:1640) [spigot-R0.1-596221bf2ff-9a1fc1e2eea-0ce77bc4b38.jar:git-Spigot-596221b-9a1fc1e]
at net.minecraft.server.v1_12_R1.World.h(World.java:1610) [spigot-R0.1-596221bf2ff-9a1fc1e2eea-0ce77bc4b38.jar:git-Spigot-596221b-9a1fc1e]
at net.minecraft.server.v1_12_R1.World.tickEntities(World.java:1436) [spigot-R0.1-596221bf2ff-9a1fc1e2eea-0ce77bc4b38.jar:git-Spigot-596221b-9a1fc1e]
at net.minecraft.server.v1_12_R1.WorldServer.tickEntities(WorldServer.java:665) [spigot-R0.1-596221bf2ff-9a1fc1e2eea-0ce77bc4b38.jar:git-Spigot-596221b-9a1fc1e]
at net.minecraft.server.v1_12_R1.MinecraftServer.D(MinecraftServer.java:814) [spigot-R0.1-596221bf2ff-9a1fc1e2eea-0ce77bc4b38.jar:git-Spigot-596221b-9a1fc1e]
at net.minecraft.server.v1_12_R1.DedicatedServer.D(DedicatedServer.java:405) [spigot-R0.1-596221bf2ff-9a1fc1e2eea-0ce77bc4b38.jar:git-Spigot-596221b-9a1fc1e]
at net.minecraft.server.v1_12_R1.MinecraftServer.C(MinecraftServer.java:678) [spigot-R0.1-596221bf2ff-9a1fc1e2eea-0ce77bc4b38.jar:git-Spigot-596221b-9a1fc1e]
at net.minecraft.server.v1_12_R1.MinecraftServer.run(MinecraftServer.java:576) [spigot-R0.1-596221bf2ff-9a1fc1e2eea-0ce77bc4b38.jar:git-Spigot-596221b-9a1fc1e]
at java.lang.Thread.run(Thread.java:745) [?:1.8.0_111]
Caused by: java.lang.IllegalArgumentException: Experience progress must be between 0.0 and 1.0 (-0.0026840544)
at com.google.common.base.Preconditions.checkArgument(Preconditions.java:191) ~[spigot-R0.1-596221bf2ff-9a1fc1e2eea-0ce77bc4b38.jar:git-Spigot-596221b-9a1fc1e]
at org.bukkit.craftbukkit.v1_12_R1.entity.CraftPlayer.setExp(CraftPlayer.java:823) ~[spigot-R0.1-596221bf2ff-9a1fc1e2eea-0ce77bc4b38.jar:git-Spigot-596221b-9a1fc1e]
at net.stormdev.urace.events.RaceEventsListener.speedo(RaceEventsListener.java:427) ~[?:?]
at sun.reflect.GeneratedMethodAccessor176.invoke(Unknown Source) ~[?:?]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_111]
at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_111]
at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:302) ~[spigot-R0.1-596221bf2ff-9a1fc1e2eea-0ce77bc4b38.jar:git-Spigot-596221b-9a1fc1e]
... 13 more