Error when teleporting to nether world

[Disorbs]

Description

Describe the bug

So I get this error whenever I teleport to the nether world not the island nether world but the regular one.

essentials warp: https://paste.md-5.net/ilijolexix.sql
multiverse-teleport: https://paste.md-5.net/fakelovoza.sql

Steps to reproduce the behavior

Simply stand on my island and do /warp nether or /mvtp

BentoBox Version (Mandatory)

[17:30:40 INFO]: Running PAPER 1.15.2.
[17:30:40 INFO]: BentoBox version: 1.13.0
[17:30:40 INFO]: Database: JSON
[17:30:40 INFO]: Loaded Game Worlds:
[17:30:40 INFO]: bskyblock_world (BSkyBlock): Overworld
[17:30:40 INFO]: Loaded Addons:
[17:30:40 INFO]: Biomes 1.7.0 (ENABLED)
[17:30:40 INFO]: BSkyBlock 1.12.0 (ENABLED)
[17:30:40 INFO]: Challenges 0.8.0-1.6.0 (ENABLED)
[17:30:40 INFO]: Level 1.9.3 (ENABLED)
[17:30:40 INFO]: Limits 1.9.4 (ENABLED)
[17:30:40 INFO]: TeamChat ${version} (ENABLED)
[17:30:40 INFO]: Warps 1.9.0 (ENABLED)

Plugins (Optional)

Plugins (44): ajParkour, AltLimit, BentoBox, ChatControl, CleanroomGenerator*, CrateReloaded, DeluxeChat, DeluxeMenus, EpicSpawners, Essentials, EssentialsSpawn, FeatherBoard*, FlightControl, HolographicDisplays, HolographicPlaceholders, IllegalStack, ItemJoin, LuckPerms, mcMMO, Multiverse-Core, Multiverse-NetherPortals, MVdWPlaceholderAPI*, MyCommand, OldCombatMechanics, PlaceholderAPI, PlayerVaults, PlugMan, ProtocolLib, ProtocolSupport, ProtocolSupportLegacyChest, ShopGUIPlus, SuperbVote, TAB, TokenManager, Trash*, UltimateStacker, Vault, VoteParty, Votifier*, WildStacker, WorldEdit, WorldEditSUI, WorldGuard, WorldGuardExtraFlags

[tastybento]

That NPE is being caused by trying to get the name of the world of the player teleporting. That world should never be null, but for some reason it was. This shouldn't happen. I added defensive code to prevent the NPE, but I don't know why this event is giving a null world.