IllegalArgumentException “plugin is not registered” on Velocity 3.4.0 + ValioBungee + Redis Server 8.2.2 environment

[Mattrolol]

Setup:

• Proxy: Velocity 3.4.0 – SNAPSHOT build 555
• Using ValioBungee 0.12.5 (https://github.com/ProxioDev/ValioBungee) with Redis Server 8.2.2
• BTLP version: BungeeTabListPlus-3.6.8-SNAPSHOT (built via Jenkins on 18 Oct 2025)

Problem:
On proxy startup I get the following error and the plugin fails to initialize properly:

[19:59:05 ERROR]: Couldn't pass ProxyInitializeEvent to bungeetablistplus 3.6.8-SNAPSHOT
java.lang.IllegalArgumentException: plugin is not registered
        at com.google.common.base.Preconditions.checkArgument(Preconditions.java:145) ~[velocity-3.4.0-SNAPSHOT-555.jar:3.4.0-SNAPSHOT (git-b6b6b20f-b555)]
        at com.velocitypowered.proxy.scheduler.VelocityScheduler.buildTask(VelocityScheduler.java:84) ~[velocity-3.4.0-SNAPSHOT-555.jar:3.4.0-SNAPSHOT (git-b6b6b20f-b555)]
        at codecrafter47.bungeetablistplus.managers.RedisPlayerManager.<init>(RedisPlayerManager.java:108) ~[?:?]
        at codecrafter47.bungeetablistplus.BungeeTabListPlus.onEnable(BungeeTabListPlus.java:274) ~[?:?]
        at codecrafter47.bungeetablistplus.BootstrapPlugin.onProxyInitializationLate(BootstrapPlugin.java:96) ~[?:?]
        at codecrafter47.bungeetablistplus.Lmbda$6.execute(Unknown Source) ~[?:?]
        at com.velocitypowered.proxy.event.UntargetedEventHandler$VoidHandler.lambda$buildHandler$0(UntargetedEventHandler.java:56) ~[velocity-3.4.0-SNAPSHOT-555.jar:3.4.0-SNAPSHOT (git-b6b6b20f-b555)]
        at com.velocitypowered.proxy.event.VelocityEventManager.fire(VelocityEventManager.java:677) ~[velocity-3.4.0-SNAPSHOT-555.jar:3.4.0-SNAPSHOT (git-b6b6b20f-b555)]
        at com.velocitypowered.proxy.event.VelocityEventManager.lambda$fire$5(VelocityEventManager.java:542) ~[velocity-3.4.0-SNAPSHOT-555.jar:3.4.0-SNAPSHOT (git-b6b6b20f-b555)]
        at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1144) ~[?:?]
        at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:642) ~[?:?]
        at java.base/java.lang.Thread.run(Thread.java:1583) [?:?]

What I think is happening:
It looks like BTLP tries to run a scheduler task before the plugin is fully registered in Velocity.

Notes:

• The issue happens only when ValioBungee is installed.
• Removing ValioBungee makes BTLP start successfully with no errors.
• Redis connection is working fine otherwise.

Request:
Can you please check if BTLP works correctly with Velocity 3.4.0 (build # 555) and ValioBungee?
Maybe something changed in how plugins are registered or in the scheduler API.

Thank you!