[22:26:59] [Server thread/FATAL]: Error executing task
java.util.concurrent.ExecutionException: java.lang.NoSuchFieldError: c
	at java.util.concurrent.FutureTask.report(Unknown Source) ~[?:1.8.0_144]
	at java.util.concurrent.FutureTask.get(Unknown Source) ~[?:1.8.0_144]
	at net.minecraft.server.v1_12_R1.SystemUtils.a(SourceFile:47) [paper_spigot_1.12.jar:git-Paper-1261]
	at net.minecraft.server.v1_12_R1.MinecraftServer.D(MinecraftServer.java:843) [paper_spigot_1.12.jar:git-Paper-1261]
	at net.minecraft.server.v1_12_R1.DedicatedServer.D(DedicatedServer.java:426) [paper_spigot_1.12.jar:git-Paper-1261]
	at net.minecraft.server.v1_12_R1.MinecraftServer.C(MinecraftServer.java:767) [paper_spigot_1.12.jar:git-Paper-1261]
	at net.minecraft.server.v1_12_R1.MinecraftServer.run(MinecraftServer.java:665) [paper_spigot_1.12.jar:git-Paper-1261]
	at java.lang.Thread.run(Unknown Source) [?:1.8.0_144]
Caused by: java.lang.NoSuchFieldError: c
	at net.jordan.vehicles.nms.v1_12_R1.CustomContainerAnvil.b(CustomContainerAnvil.java:314) ~[?:?]
	at net.jordan.vehicles.nms.v1_12_R1.CustomContainerAnvil.shiftClick(CustomContainerAnvil.java:308) ~[?:?]
	at net.minecraft.server.v1_12_R1.Container.a(Container.java:251) ~[paper_spigot_1.12.jar:git-Paper-1261]
	at net.minecraft.server.v1_12_R1.PlayerConnection.a(PlayerConnection.java:1988) ~[paper_spigot_1.12.jar:git-Paper-1261]
	at net.minecraft.server.v1_12_R1.PacketPlayInWindowClick.a(SourceFile:33) ~[paper_spigot_1.12.jar:git-Paper-1261]
	at net.minecraft.server.v1_12_R1.PacketPlayInWindowClick.a(SourceFile:10) ~[paper_spigot_1.12.jar:git-Paper-1261]
	at net.minecraft.server.v1_12_R1.PlayerConnectionUtils.lambda$ensureMainThread$0(PlayerConnectionUtils.java:14) ~[paper_spigot_1.12.jar:git-Paper-1261]
	at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source) ~[?:1.8.0_144]
	at java.util.concurrent.FutureTask.run(Unknown Source) ~[?:1.8.0_144]
	at net.minecraft.server.v1_12_R1.SystemUtils.a(SourceFile:46) ~[paper_spigot_1.12.jar:git-Paper-1261]
	... 5 more