Error Crate

[CrateReloaded] Task #63 for CrateReloaded v2.0.16 generated an exception
java.lang.NoSuchMethodError: org.bukkit.command.CommandSender.spigot()Lorg/bukkit/command/CommandSender$Spigot;
        at com.hazebyte.crate.api.util.Messenger.tell(Messenger.java:97) ~[?:?]
        at cratereloaded.aj.run(Open.java:20) ~[?:?]
        at cratereloaded.M.c(UserCrate.java:362) ~[?:?]
        at cratereloaded.M.onRewards(UserCrate.java:286) ~[?:?]
        at cratereloaded.M.onReward(UserCrate.java:280) ~[?:?]
        at cratereloaded.N.a(Animation.java:191) ~[?:?]
        at cratereloaded.N.b(Animation.java:196) ~[?:?]
        at java.util.Arrays$ArrayList.forEach(Unknown Source) ~[?:1.8.0_221]
        at cratereloaded.N.a(Animation.java:196) ~[?:?]
        at cratereloaded.W$a.run(BlankEnding.java:75) ~[?:?]
        at org.bukkit.craftbukkit.v1_8_R3.scheduler.CraftTask.run(CraftTask.java:71) ~[Spigot.jar:git-Spigot-21fe707-e1ebe52]
        at org.bukkit.craftbukkit.v1_8_R3.scheduler.CraftScheduler.mainThreadHeartbeat(CraftScheduler.java:350) [Spigot.jar:git-Spigot-21fe707-e1ebe52]
        at net.minecraft.server.v1_8_R3.MinecraftServer.B(MinecraftServer.java:723) [Spigot.jar:git-Spigot-21fe707-e1ebe52]
        at net.minecraft.server.v1_8_R3.DedicatedServer.B(DedicatedServer.java:374) [Spigot.jar:git-Spigot-21fe707-e1ebe52]
        at net.minecraft.server.v1_8_R3.MinecraftServer.A(MinecraftServer.java:654) [Spigot.jar:git-Spigot-21fe707-e1ebe52]
        at net.minecraft.server.v1_8_R3.MinecraftServer.run(MinecraftServer.java:557) [Spigot.jar:git-Spigot-21fe707-e1ebe52]
        at java.lang.Thread.run(Unknown Source) [?:1.8.0_221]