My server keeps going down

Honestly i have no idea why and i dont know what is going on with it the log file was 119 mb so it wouldnt say (i opened it up with a big file editor) and i even unistalled RandomPackage but this is what it says
[20:38:58] [Server thread/WARN]: [RandomPackage] Task #13041 for RandomPackage v15.2 generated an exception
java.lang.NoSuchMethodError: org.bukkit.World.getNearbyEntities(Lorg/bukkit/Location;DDD)Ljava/util/Collection;
at me.randomHashTags.RandomPackage.api.KOTH.setScoreboard( ~[?:?]
at me.randomHashTags.RandomPackage.api.KOTH.access$0( ~[?:?]
at me.randomHashTags.RandomPackage.api.KOTH$ ~[?:?]
at ~[PaperSpigot-1.8-R0.1-SNAPSHOT-b235.jar:git-PaperSpigot-9b05d00-33d5de3]
at org.bukkit.craftbukkit.v1_8_R1.scheduler.CraftScheduler.mainThreadHeartbeat( [PaperSpigot-1.8-R0.1-SNAPSHOT-b235.jar:git-PaperSpigot-9b05d00-33d5de3]
at net.minecraft.server.v1_8_R1.MinecraftServer.z( [PaperSpigot-1.8-R0.1-SNAPSHOT-b235.jar:git-PaperSpigot-9b05d00-33d5de3]
at net.minecraft.server.v1_8_R1.DedicatedServer.z( [PaperSpigot-1.8-R0.1-SNAPSHOT-b235.jar:git-PaperSpigot-9b05d00-33d5de3]
at net.minecraft.server.v1_8_R1.MinecraftServer.y( [PaperSpigot-1.8-R0.1-SNAPSHOT-b235.jar:git-PaperSpigot-9b05d00-33d5de3]
at [PaperSpigot-1.8-R0.1-SNAPSHOT-b235.jar:git-PaperSpigot-9b05d00-33d5de3]
at [?:1.8.0_162]

And when i got to start it up it closes itself after i deleted the recent 2 plugins i was messing with supplycrates and random package if i can get more info on this tell me where to look and i will reply with what is needed Thank you for your continued help (btw i got votifier working thx for helping)

You can close this now it was PaperSpigot idk why idk what happened with it but the new paperclip/paper spigot is doing weird stuff and idk how to get the old regular paper spigot that i used about a year ago (which i tried installing old ones But they all included paper clip)