java.lang.NoSuchFieldError: END_PORTAL_FRAME
        at com.onarandombox.MultiverseCore.listeners.MVPortalListener.portalForm(MVPortalListener.java:74) ~[?:?]
        at catserver.server.executor.asm.generated.GeneratedEventExecutor48.execute(Unknown Source) ~[?:?]
        at org.bukkit.plugin.EventExecutor$2.execute(EventExecutor.java:67) ~[EventExecutor$2.class:git-CatServer-1.12.2-de0a1c1]
        at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62) ~[RegisteredListener.class:git-CatServer-1.12.2-de0a1c1]
        at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:503) [SimplePluginManager.class:git-CatServer-1.12.2-de0a1c1]
        at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:488) [SimplePluginManager.class:git-CatServer-1.12.2-de0a1c1]
        at org.bukkit.craftbukkit.v1_12_R1.event.CraftEventFactory.callPlayerInteractEvent(CraftEventFactory.java:274) [CraftEventFactory.class:git-CatServer-1.12.2-de0a1c1]
        at net.minecraft.server.management.PlayerInteractionManager.func_187251_a(PlayerInteractionManager.java:492) [or.class:?]
        at net.minecraft.network.NetHandlerPlayServer.func_184337_a(NetHandlerPlayServer.java:1128) [pa.class:?]
        at net.minecraft.network.play.client.CPacketPlayerTryUseItemOnBlock.func_148833_a(SourceFile:55) [ma.class:?]
        at net.minecraft.network.play.client.CPacketPlayerTryUseItemOnBlock.func_148833_a(SourceFile:11) [ma.class:?]
        at net.minecraft.network.PacketThreadUtil$1.run(SourceFile:13) [hv$1.class:?]
        at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source) [?:1.8.0_241]
        at java.util.concurrent.FutureTask.run(Unknown Source) [?:1.8.0_241]
        at net.minecraft.util.Util.func_181617_a(SourceFile:46) [h.class:?]
        at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:839) [MinecraftServer.class:?]
        at net.minecraft.server.dedicated.DedicatedServer.func_71190_q(DedicatedServer.java:472) [nz.class:?]
        at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:776) [MinecraftServer.class:?]
        at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:630) [MinecraftServer.class:?]
        at java.lang.Thread.run(Unknown Source) [?:1.8.0_241]

1.12.2的服务器请安装2.5.0的multiverse
你估计装的高版本的
https://c-t.work/s/7de6725a00d942

[17:29:52] [Server thread/INFO] [net.minecraft.server.dedicated.DedicatedServer]: OldYellowMetals has made the advancement [Enshrined]
[17:29:52] [Server thread/INFO] [ebwizardry]: Synchronising advancements for OldYellowMetals
[17:30:02] [Server thread/ERROR] [net.minecraft.server.MinecraftServer]: Encountered an unexpected exception
net.minecraft.util.ReportedException: Ticking entity
        at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:913) ~[MinecraftServer.class:?]
        at net.minecraft.server.dedicated.DedicatedServer.func_71190_q(DedicatedServer.java:472) ~[nz.class:?]
        at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:776) ~[MinecraftServer.class:?]
        at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:630) [MinecraftServer.class:?]
        at java.lang.Thread.run(Unknown Source) [?:1.8.0_241]
Caused by: java.lang.NullPointerException
        at com.favouritedragon.arcaneessentials.common.spell.necromancy.Zam.onEntityHit(Zam.java:38) ~[Zam.class:?]
        at electroblob.wizardry.spell.SpellRay.cast(SpellRay.java:183) ~[SpellRay.class:?]
        at electroblob.wizardry.entity.living.EntityAIAttackSpell.attemptCastSpell(EntityAIAttackSpell.java:217) ~[EntityAIAttackSpell.class:?]
        at electroblob.wizardry.entity.living.EntityAIAttackSpell.func_75246_d(EntityAIAttackSpell.java:191) ~[EntityAIAttackSpell.class:?]
        at net.minecraft.entity.ai.EntityAITasks.func_75774_a(EntityAITasks.java:105) ~[xf.class:?]
        at net.minecraft.entity.EntityLiving.func_70626_be(EntityLiving.java:822) ~[vq.class:?]
        at net.minecraft.entity.EntityLivingBase.func_70636_d(EntityLivingBase.java:2688) ~[vp.class:?]
        at net.minecraft.entity.EntityLiving.func_70636_d(EntityLiving.java:622) ~[vq.class:?]
        at net.minecraft.entity.monster.EntityMob.func_70636_d(EntityMob.java:46) ~[ade.class:?]
        at electroblob.wizardry.entity.living.EntityEvilWizard.func_70636_d(EntityEvilWizard.java:209) ~[EntityEvilWizard.class:?]
        at net.minecraft.entity.EntityLivingBase.func_70071_h_(EntityLivingBase.java:2506) ~[vp.class:?]
        at net.minecraft.entity.EntityLiving.func_70071_h_(EntityLiving.java:331) ~[vq.class:?]
        at net.minecraft.entity.monster.EntityMob.func_70071_h_(EntityMob.java:51) ~[ade.class:?]
        at net.minecraft.world.World.func_72866_a(World.java:2317) ~[amu.class:?]
        at net.minecraft.world.World.func_72870_g(World.java:2271) ~[amu.class:?]
        at net.minecraft.world.World.func_72939_s(World.java:2037) ~[amu.class:?]
        at net.minecraft.world.WorldServer.func_72939_s(WorldServer.java:764) ~[oo.class:?]
        at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:906) ~[MinecraftServer.class:?]
        ... 4 more
还有这个呢？

arcane-essentials这个mod报的错

那么有修复方法吗？

更新一下？没用的话只能删掉