UnsupportedOperationException when using a spawner egg

[marcbal]

Please paste the output from /usb version below

22:27:40 Name: uSkyBlock
22:27:40 Version: 3.1.0-SNAPSHOT
22:27:40 Description: Ultimate SkyBlock v3.1.0-SNAPSHOT-11f78a2
22:27:40 Language: fr (fr)
22:27:40 State: d=200, r=80, i=952, p=1 099, n=true, awe=false
22:27:40 Server: Paper 1.21.4-107-1bb3677 (MC: 1.21.4)
22:27:40 State: online=true, bungee=true
22:27:40 ------------------------------
22:27:40 Vault 1.7.3-b131 (ENABLED)
22:27:40 WorldEdit 7.3.10-beta-01+cb9fd58 (ENABLED)
22:27:40 WorldGuard 7.0.13-beta-2+5c4848b (ENABLED)
22:27:40 Multiverse-Core 4.3.14 (ENABLED)
22:27:40 Multiverse-Portals 4.2.3 (ENABLED)
22:27:40 Multiverse-NetherPortals 4.2.3 (ENABLED)
22:27:40 ------------------------------

What steps will reproduce the problem?

1. use a spawner egg on your own island
2. look at the console for the error

If you have any log-files, please paste them to pastebin.com
Full stacktrace: https://pastebin.com/gWCNjNSi

20:56:22 Could not pass event PlayerInteractEvent to uSkyBlock v3.1.0-SNAPSHOT
java.lang.UnsupportedOperationException: Must check item type to get spawned type
at OB.craftbukkit.inventory.CraftMetaSpawnEgg.getSpawnedType(CraftMetaSpawnEgg.java:90)~
at uSkyBlock-3.1.0-SNAPSHOT.jar/us.talabrek.ultimateskyblock.event.SpawnEvents.onSpawnEggEvent(SpawnEvents.java:65)~
at ... (NMS/Bukkit/Paper stuff)

Basic analysis
According to the API documentation, SpawnEggMeta#getSpawnedType method is deprecated for removal, and its contract annotation indicate hat it will always throw an exception when called.
This is exactly what is happening here.

[minoneer]

Thanks for the report!