Server Crash Help

---- Minecraft Crash Report ----

WARNING: coremods are present:
  llibrary (llibrary-core-1.0.11-1.12.2.jar)
  wings (Wings-Mod-1.12.2.jar)
Contact their authors BEFORE contacting forge

// My bad.

Time: 13/06/21 20:19
Description: Exception in server tick loop

java.lang.NullPointerException: Exception in server tick loop
    at java.util.regex.Matcher.getTextLength(Unknown Source)
    at java.util.regex.Matcher.reset(Unknown Source)
    at java.util.regex.Matcher.<init>(Unknown Source)
    at java.util.regex.Pattern.matcher(Unknown Source)
    at com.pixelmonmod.pixelmon.entities.pixelmon.abilities.AbilityBase.getAbility(AbilityBase.java:726)
    at com.pixelmonmod.pixelmon.api.pokemon.Pokemon.initialize(Pokemon.java:375)
    at com.pixelmonmod.pixelmon.api.pokemon.PokemonSpec.create(PokemonSpec.java:655)
    at com.pixelmonmod.pixelmon.entities.npcs.registry.TrainerData.getRandomParty(TrainerData.java:116)
    at com.pixelmonmod.pixelmon.entities.npcs.NPCTrainer.setLevel(NPCTrainer.java:1298)
    at com.pixelmonmod.pixelmon.api.spawning.archetypes.entities.npcs.trainers.SpawnActionNPCTrainer.createEntity(SpawnActionNPCTrainer.java:47)
    at com.pixelmonmod.pixelmon.api.spawning.archetypes.entities.npcs.trainers.SpawnActionNPCTrainer.createEntity(SpawnActionNPCTrainer.java:27)
    at com.pixelmonmod.pixelmon.api.spawning.SpawnAction.getOrCreateEntity(SpawnAction.java:52)
    at com.pixelmonmod.pixelmon.api.spawning.SpawnAction.doSpawn(SpawnAction.java:75)
    at com.pixelmonmod.pixelmon.api.spawning.archetypes.spawners.TickingSpawner.doPass(TickingSpawner.java:105)
    at com.pixelmonmod.pixelmon.api.spawning.SpawnerCoordinator.onTick(SpawnerCoordinator.java:50)
    at net.minecraftforge.fml.common.eventhandler.ASMEventHandler_278_SpawnerCoordinator_onTick_ServerTickEvent.invoke(.dynamic)
    at net.minecraftforge.fml.common.eventhandler.ASMEventHandler.invoke(ASMEventHandler.java:90)
    at net.minecraftforge.fml.common.eventhandler.EventBus.post(EventBus.java:190)
    at net.minecraftforge.fml.common.FMLCommonHandler.onPostServerTick(FMLCommonHandler.java:270)
    at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:910)
    at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:737)
    at java.lang.Thread.run(Unknown Source)

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

-- System Details --
Details:
    Minecraft Version: 1.12.2
    Magma Version: 48ec0a1
    Operating System: Windows 10 (amd64) version 10.0
    Java Version: 1.8.0_281, Oracle Corporation
    Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
    Memory: 12588936536 bytes (12005 MB) / 16731602944 bytes (15956 MB) up to 16731602944 bytes (15956 MB)
    JVM Flags: 2 total; -Xmx16G -Xms16G
    IntCache: cache: 0, tcache: 0, allocated: 12, tallocated: 94
    FML: MCP 9.42 Powered by Forge 14.23.5.2855 21 mods loaded, 19 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                                |
    |:------ |:--------------- |:----------------- |:--------------------------------------- |:---------------------------------------- |
    | LCHIJA | minecraft       | 1.12.2            | minecraft.jar                           | None                                     |
    | LCHIJA | mcp             | 9.42              | minecraft.jar                           | None                                     |
    | LCHIJA | FML             | 8.0.99.99         | server.jar                              | None                                     |
    | LCHIJA | forge           | 14.23.5.2855      | server.jar                              | None                                     |
    | LCHIJA | crafttweaker    | 4.1.20            | CraftTweaker2-1.12-4.1.20.644.jar       | None                                     |
    | LCHIJA | mtlib           | 3.0.6             | MTLib-3.0.6.jar                         | None                                     |
    | LCHIJA | modtweaker      | 4.0.18            | modtweaker-4.0.18.jar                   | None                                     |
    | LCHIJA | jei             | 4.15.0.291        | jei_1.12.2-4.15.0.291.jar               | None                                     |
    | LCHIJA | crafttweakerjei | 2.0.3             | CraftTweaker2-1.12-4.1.20.644.jar       | None                                     |
    | LCHIJA | ironchest       | 1.12.2-7.0.67.844 | Iron-Chests-Mod-1.12.2.jar              | None                                     |
    | LCHIJA | ironfurnaces    | 1.3.5             | ironfurnaces-1.3.5.jar                  | None                                     |
    | LCHIJA | journeymap      | 1.12.2-5.7.0      | JourneyMap-Mod-1.12.2-Unlimited_1.jar   | None                                     |
    | LCHIJA | lucky           | 7.6.0             | Lucky-Block-Mod-1.12.2.jar              | None                                     |
    | LCHIJA | pixelmon        | 8.2.0             | Pixelmon-1.12.2-8.2.0-universal.jar     | None                                     |
    | LCHIJA | pixelextras     | 2.5.12            | PixelExtras-1.12.2-2.5.12-universal.jar | None                                     |
    | LCHIJA | pokelucky       | 3.9.1             | PokeLucky-Mod-1.12.2.jar                | None                                     |
    | LCHIJA | waystones       | 4.0.72            | Waystones_1.12.2-4.0.72.jar             | None                                     |
    | LCHIJA | llibrary        | 1.7.18            | LLibrary-1.12.2.jar                     | b9f30a813bee3b9dd5652c460310cfcd54f6b7ec |
    | LCHIJA | wings           | 1.1.4             | Wings-Mod-1.12.2.jar                    | None                                     |
    | UD     | bauble_wings    | 1.0.0             | Wings-Mod-1.12.2.jar                    | None                                     |
    | UD     | mobends_wings   | 1.0.0             | Wings-Mod-1.12.2.jar                    | None                                     |

    Loaded coremods (and transformers): 
llibrary (llibrary-core-1.0.11-1.12.2.jar)
  net.ilexiconn.llibrary.server.core.plugin.LLibraryTransformer
  net.ilexiconn.llibrary.server.core.patcher.LLibraryRuntimePatcher
wings (Wings-Mod-1.12.2.jar)
  me.paulf.wings.server.asm.WingsRuntimePatcher
  me.paulf.wings.server.asm.mobends.WingsMoBendsRuntimePatcher
    Profiler Position: N/A (disabled)
    Player Count: 3 / 100; [EntityPlayerMP['MC_LUIZ'/33, uuid='a3f0792d-fde0-3ed5-ae28-7ab269f8f933', l='DIM1', x=699,35, y=57,43, z=1233,60, cx=43, cd=77, tl=290014, v=true, d=false](MC_LUIZ at 699.3514648433112,57.42873523062849,1233.5950212127484), EntityPlayerMP['mirolucas'/174, uuid='7dd3ca54-ede9-3fbf-91a3-56bfa25e5991', l='DIM1', x=-1846,12, y=139,38, z=-879,47, cx=-116, cd=-55, tl=226632, v=true, d=false](mirolucas at -1846.1188108778165,139.3845788821512,-879.4670965234244), EntityPlayerMP['GCalifornio'/7404, uuid='0ec31f5b-5358-3e38-ad3c-41f50463a1ec', l='world', x=298,30, y=137,48, z=71,29, cx=18, cd=4, tl=570749, v=true, d=false](GCalifornio at 298.30000001192093,137.48029638670866,71.29192160647032)]
    Is Modded: Definitely; Server brand changed to 'Magma'
    Type: Dedicated Server (map_server.txt)