Problem/Bug Server won't start

I want to start my server but when i start it this happens:

Code:

--:--:--*** Error, this build is outdated ***

--:--:-- *** Please download a new build as per instructions from https://www.spigotmc.org/ ***

--:--:-- *** Server will start in 15 seconds ***

--:--:-- Loading libraries, please wait...

13:28:44INFO]: Starting minecraft server version 1.12.2

13:28:44INFO]: Loading properties

13:28:44INFO]: Default game type: CREATIVE

13:28:44INFO]: Generating keypair

13:28:45INFO]: Starting Minecraft server on *:25668

13:28:45INFO]: Using epoll channel type

13:28:46INFO]: This server is running CraftBukkit version git-Bukkit-45c8386 (MC: 1.12.2) (Implementing API version 1.12.2-R0.1-SNAPSHOT)

13:28:46INFO]: Console input is disabled due to --noconsole command argument

13:28:46INFO]: [FastAsyncWorldEdit] Loading FastAsyncWorldEdit v18.02.09-e09c0c2-1006-19.1.1

13:28:46INFO]: [WorldEdit] Loading WorldEdit v6.1.7;dd00bb1

13:28:46INFO]: [FastAsyncWorldEdit] Enabling FastAsyncWorldEdit v18.02.09-e09c0c2-1006-19.1.1

13:28:47INFO]: Vault is used for persistent `/wea` toggles.

13:28:50INFO]: Preparing level "Realword"

13:28:52INFO]: Preparing start region for level 0 (Seed: 113318802)

13:28:53INFO]: Preparing spawn area: 49%

13:28:54INFO]: Preparing spawn area: 74%

13:28:54INFO]: Preparing start region for level 1 (Seed: 113318802)

13:28:55INFO]: Preparing spawn area: 31%

13:28:57INFO]: Preparing spawn area: 56%

13:28:58INFO]: UUID of player 27Davinator is 95a7bde8-e403-4665-8696-48390168545c

13:28:58INFO]: Preparing spawn area: 92%

13:28:58INFO]: Preparing start region for level 2 (Seed: 113318802)

13:28:58INFO]: [WorldEdit] Enabling WorldEdit v6.1.7;dd00bb1

13:28:59INFO]: WEPIF: Using the Bukkit Permissions API.

13:28:59INFO]: [WorldEdit] Using com.sk89q.worldedit.bukkit.adapter.impl.Spigot_v1_12_R1 as the Bukkit adapter

13:28:59INFO]: Server permissions file permissions.yml is empty, ignoring it

13:29:00INFO]: Done (9.267s)! For help, type "help" or "?"

13:29:00INFO]: Starting GS4 status listener

13:29:00INFO]: Starting remote control listener

13:29:00INFO]: Query running on 0.0.0.0:25668

13:29:00INFO]: RCON running on 0.0.0.0:25575

13:29:01ERROR]: Encountered an unexpected exception

--:--:-- net.minecraft.server.v1_12_R1.ReportedException: Ticking block entity

--:--:-- at net.minecraft.server.v1_12_R1.MinecraftServer.D(MinecraftServer.java:754) ~[craftbukkit-1.12.2.jar:git-Bukkit-45c8386]

--:--:-- at net.minecraft.server.v1_12_R1.DedicatedServer.D(DedicatedServer.java:371) ~[craftbukkit-1.12.2.jar:git-Bukkit-45c8386]

--:--:-- at net.minecraft.server.v1_12_R1.MinecraftServer.C(MinecraftServer.java:651) ~[craftbukkit-1.12.2.jar:git-Bukkit-45c8386]

--:--:-- at net.minecraft.server.v1_12_R1.MinecraftServer.run(MinecraftServer.java:555) [craftbukkit-1.12.2.jar:git-Bukkit-45c8386]

--:--:-- at java.lang.Thread.run(Thread.java:748) [?:1.8.0_151]

--:--:-- Caused by: java.lang.NullPointerException

--:--:-- at net.minecraft.server.v1_12_R1.TileEntityHopper.s(TileEntityHopper.java:210) ~[craftbukkit-1.12.2.jar:git-Bukkit-45c8386]

--:--:-- at net.minecraft.server.v1_12_R1.TileEntityHopper.o(TileEntityHopper.java:130) ~[craftbukkit-1.12.2.jar:git-Bukkit-45c8386]

--:--:-- at net.minecraft.server.v1_12_R1.TileEntityHopper.e(TileEntityHopper.java:118) ~[craftbukkit-1.12.2.jar:git-Bukkit-45c8386]

--:--:-- at net.minecraft.server.v1_12_R1.World.tickEntities(World.java:1391) ~[craftbukkit-1.12.2.jar:git-Bukkit-45c8386]

--:--:-- at net.minecraft.server.v1_12_R1.WorldServer.tickEntities(WorldServer.java:646) ~[craftbukkit-1.12.2.jar:git-Bukkit-45c8386]

--:--:-- at net.minecraft.server.v1_12_R1.MinecraftServer.D(MinecraftServer.java:750) ~[craftbukkit-1.12.2.jar:git-Bukkit-45c8386]

--:--:-- ... 4 more

13:29:01ERROR]: This crash report has been saved to: /data/./crash-reports/crash-2018-02-10_13.29.01-server.txt

13:29:01INFO]: Stopping server

13:29:01INFO]: [WorldEdit] Disabling WorldEdit v6.1.7;dd00bb1

13:29:01INFO]: [FastAsyncWorldEdit] Disabling FastAsyncWorldEdit v18.02.09-e09c0c2-1006-19.1.1

13:29:01INFO]: Saving players

13:29:01INFO]: Saving worlds

13:29:01INFO]: Saving chunks for level 'Realword'/overworld

13:29:01INFO]: Saving chunks for level 'Realword_nether'/the_nether

13:29:01INFO]: Saving chunks for level 'Realword_the_end'/the_end

Im Hosting my server at minehub.de so I dont know much about server I only know that my server cant start. I hope you can help me.

Thx Lukecraft

 

@timtower it works that meens its something in the world

 

@timtower i have opened it in singleplayer nad ther it works im uploading it to the server again now

@timtower it worked thanks for you help

EDIT by Moderator: merged posts, please use the edit button instead of double posting.