My server keeps crashing when i start it

I dont know why my server wont start heres the crash report

---- Minecraft Crash Report ----

WARNING: coremods are present:
SpongeCoremod (spongeforge-1.12.2-2768-7.1.4.jar)
Contact their authors BEFORE contacting forge

// Everything’s going to plan. No, really, that was supposed to happen.

Time: 1/23/19 12:01 PM
Description: Exception in server tick loop

java.lang.RuntimeException: derp
at net.minecraft.world.storage.SaveHandler.redirect$onLoadWorldInfo$bcl000(SaveHandler.java:1073)
at net.minecraft.world.storage.SaveHandler.func_75757_d(SaveHandler.java:122)
at org.spongepowered.common.world.WorldManager.loadAllWorlds(WorldManager.java:711)
at net.minecraft.server.MinecraftServer.func_71247_a(MinecraftServer.java:3545)
at net.minecraft.server.dedicated.DedicatedServer.func_71197_b(DedicatedServer.java:270)
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:486)
at java.lang.Thread.run(Unknown Source)
Caused by: java.lang.RuntimeException: Attempt failed when reading Sponge level data for [] from file [level_sponge.dat]!
at net.minecraft.world.storage.SaveHandler.loadSpongeDatData(SaveHandler.java:619)
at net.minecraft.world.storage.SaveHandler.redirect$onLoadWorldInfo$bcl000(SaveHandler.java:1071)
… 6 more
Caused by: java.util.zip.ZipException: Not in GZIP format
at java.util.zip.GZIPInputStream.readHeader(Unknown Source)
at java.util.zip.GZIPInputStream.(Unknown Source)
at java.util.zip.GZIPInputStream.(Unknown Source)
at net.minecraft.nbt.CompressedStreamTools.func_74796_a(CompressedStreamTools.java:26)
at net.minecraft.world.storage.SaveHandler.loadSpongeDatData(SaveHandler.java:616)
… 7 more

A detailed walkthrough of the error, its code path and all known details is as follows:

– Head –
Thread: Server thread
Stacktrace:
at net.minecraft.world.storage.SaveHandler.redirect$onLoadWorldInfo$bcl000(SaveHandler.java:1073)
at net.minecraft.world.storage.SaveHandler.func_75757_d(SaveHandler.java:122)

– Sponge PhaseTracker –
Details:
Phase Stack: [Empty stack]
Stacktrace:
at net.minecraft.server.MinecraftServer.handler$onCrashReport$zjk000(MinecraftServer.java:3980)
at net.minecraft.server.MinecraftServer.func_71230_b(MinecraftServer.java:889)
at net.minecraft.server.dedicated.DedicatedServer.func_71230_b(DedicatedServer.java:371)
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:558)
at java.lang.Thread.run(Unknown Source)

– System Details –
Details:
Minecraft Version: 1.12.2
Operating System: Windows 10 (amd64) version 10.0
Java Version: 1.8.0_201, Oracle Corporation
Java VM Version: Java HotSpot™ 64-Bit Server VM (mixed mode), Oracle Corporation
Memory: 519469368 bytes (495 MB) / 1485832192 bytes (1417 MB) up to 2863661056 bytes (2731 MB)
JVM Flags: 1 total; -Xmx3072M
IntCache: cache: 0, tcache: 0, allocated: 12, tallocated: 94
FML: MCP 9.42 Powered by Forge 14.23.5.2768 32 mods loaded, 32 mods active
States: ‘U’ = Unloaded ‘L’ = Loaded ‘C’ = Constructed ‘H’ = Pre-initialized ‘I’ = Initialized ‘J’ = Post-initialized ‘A’ = Available ‘D’ = Disabled ‘E’ = Errored

| State   | ID                 | Version           | Source                                            | Signature                                |
|:------- |:------------------ |:----------------- |:------------------------------------------------- |:---------------------------------------- |
| UCHIJAA | minecraft          | 1.12.2            | minecraft.jar                                     | None                                     |
| UCHIJAA | mcp                | 9.42              | minecraft.jar                                     | None                                     |
| UCHIJAA | FML                | 8.0.99.99         | forge.jar                                         | e3c3d50c7c986df74c645c0ac54639741c90a557 |
| UCHIJAA | forge              | 14.23.5.2768      | forge.jar                                         | e3c3d50c7c986df74c645c0ac54639741c90a557 |
| UCHIJAA | spongeapi          | 7.1.0-70763aa8    | spongeforge-1.12.2-2768-7.1.4.jar                 | None                                     |
| UCHIJAA | sponge             | 1.12.2-7.1.4      | spongeforge-1.12.2-2768-7.1.4.jar                 | None                                     |
| UCHIJAA | spongeforge        | 1.12.2-2768-7.1.4 | spongeforge-1.12.2-2768-7.1.4.jar                 | None                                     |
| UCHIJAA | pixelmon           | 6.3.4             | Pixelmon-1.12.2-6.3.4-universal.jar               | None                                     |
| UCHIJAA | agp                | 1.0.1             | AGP_Responged_S7.1.0-V1.0.1.jar                   | None                                     |
| UCHIJAA | catclearlag        | 0.9.0             | CatClearLag-0.9.0.jar                             | None                                     |
| UCHIJAA | economylite        | 2.15.1            | EconomyLite-7.1.0-2.15.1.jar                      | None                                     |
| UCHIJAA | griefprevention    | 4.3.0             | griefprevention-1.12.2-4.3.0.662.jar              | None                                     |
| UCHIJAA | impactor           | 1.4.0             | Impactor-S7.1.0-1.4.0.jar                         | None                                     |
| UCHIJAA | nucleus            | 1.8.2-S7.1        | Nucleus-1.8.2-S7.1-MC1.12.2-plugin.jar            | None                                     |
| UCHIJAA | gts                | 3.11.3-S7.1       | GTS-3.11.3-S7.1.jar                               | None                                     |
| UCHIJAA | legendaryplus      | 3.0               | LegendaryPlus-3.2.2.jar                           | None                                     |
| UCHIJAA | luckperms          | 4.3.75            | LuckPerms-Sponge-4.3.75.jar                       | None                                     |
| UCHIJAA | mmcrestrict        | 1.5.1             | MMCRestrict-1.5.1-API-7.jar                       | None                                     |
| UCHIJAA | multichat          | 1.5               | multichat-1.5.jar                                 | None                                     |
| UCHIJAA | pixelextras        | 2.3.10            | PixelExtras-1.12.2-2.3.10-universal.jar           | None                                     |
| UCHIJAA | pixelgenocide      | 1.0.3             | PixelGenocide-1.0.3.jar                           | None                                     |
| UCHIJAA | pixelmonbroadcasts | 0.2.2             | PixelmonBroadcasts-1.12.2-0.2.2.jar               | None                                     |
| UCHIJAA | pixelmoney         | 3.0.0             | PixelMoney-1.12.2-3.0.0.jar                       | None                                     |
| UCHIJAA | placeholderapi     | 4.4               | PlaceholderAPI-4.4.jar                            | None                                     |
| UCHIJAA | pokedexrewards     | 0.7               | PokedexRewards-0.7-MC1.12.2-F2611-S7.1.0.jar      | None                                     |
| UCHIJAA | poketeams          | 2.0.0             | PokeTeams-2.0.0.jar                               | None                                     |
| UCHIJAA | sts                | 1.0.2             | STS S7.1.0-1.0.2.jar                              | None                                     |
| UCHIJAA | trainercommands    | 2.4.1             | TrainerCommands-1.12.2-2.4.1-universal.jar        | None                                     |
| UCHIJAA | virtualtool        | 5.0               | VirtualTool-1.12.2-5.0-S7.1.0-STABLE.jar          | None                                     |
| UCHIJAA | wildmoves          | 1.0.0             | WildMoves-1.0.0.jar                               | None                                     |
| UCHIJAA | wondertrade        | 1.0.2             | WonderTrade-s7.1-v1.0.2.jar                       | None                                     |
| UCHIJAA | worldedit          | 6.1.10-SNAPSHOT   | worldedit-forge-mc1.12.2-6.1.10-SNAPSHOT-dist.jar | None                                     |

Loaded coremods (and transformers): 

SpongeCoremod (spongeforge-1.12.2-2768-7.1.4.jar)
org.spongepowered.common.launch.transformer.SpongeSuperclassTransformer
Profiler Position: N/A (disabled)
Player Count: 0 / 20; []
Is Modded: Definitely; Server brand changed to ‘fml,forge,sponge’
Type: Dedicated Server (map_server.txt)

thank you