`/sp set` command not working

[deletdd]

Plugin/Mod/Project Version

1.4.0

Minecraft / Server Version

Paper version 1.21.8-56-main@65641d1

What went wrong?

When using /sp set, it shows an invalid prefix ID error no matter what you put in. No other messages aside from that. GUI works perfectly.

How can we reproduce this?

No response

Relevant Logs

[01:41:21 INFO]: deletd_ issued server command: /simpleprefixes:simpleprefix set admin
[01:41:23 INFO]: deletd_ issued server command: /simpleprefixes:simpleprefix set admin deletd_
simpleprefixes:simpleprefix set admin deletd_
[01:42:20 INFO]: [SimplePrefixes] » Invalid prefix ID, try using the GUI.

Other Plugins

[01:33:33 INFO]: ℹ Server Plugins (37):
[01:33:33 INFO]: Paper Plugins (1):
[01:33:33 INFO]:  - PlugManX
[01:33:33 INFO]: Bukkit Plugins (36):
[01:33:33 INFO]:  - AxBoosters, AxiomPaper, ChatControl, Citizens, CyberLevels, DecentHolograms, DeluxeMenus, Essentials, FriendZ
[01:33:33 INFO]:  ItemJoin, LastLoginAPI, LuckPerms, NoChatReports, PAPIProxyBridge, Parties, PlaceholderAPI, PlaceholderCharacterMapper, ProtocolLib, SimpleNicks
[01:33:33 INFO]:  SimplePrefixes, SkBee, SkinsRestorer, SkQuery, Skript, TAB, UltraCosmetics, Vault, VentureChat, ViaBackwards
[01:33:33 INFO]:  ViaVersion, *VoidWorld, Votifier, VotingPlugin, WorldEdit, WorldGuard

Checklist

• I’m using the latest version
• I’ve checked the existing issues