Describe the bug
A clear and concise description of what the bug is.

To Reproduce
Steps to reproduce the behavior:

1. Go to start server with plugin
2. Wait about a min.
3. See error

Expected behavior
A clear and concise description of what you expected to happen.
Not spamming not at null in console
Screenshots
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Version Info
Provide your ProtocolLib install info with /protocol dump through pastebin.
https://pastebin.com/20cRFFzd
Additional context

Add any other context about the problem here.
17.10 21:04:46 [Server] WARN java.lang.NullPointerException: Cannot invoke "io.netty.channel.Channel.pipeline()" because "channel" is null
17.10 21:04:46 [Server] WARN at ProtocolLib.jar//com.comphenix.protocol.injector.netty.ChannelInjector.findChannelHandler(ChannelInjector.java:932)
17.10 21:04:46 [Server] WARN at ProtocolLib.jar//com.comphenix.protocol.injector.netty.InjectionFactory.fromPlayer(InjectionFactory.java:93)
17.10 21:04:46 [Server] WARN at ProtocolLib.jar//com.comphenix.protocol.injector.netty.ProtocolInjector$4.sendServerPacket(ProtocolInjector.java:411)
17.10 21:04:46 [Server] WARN at ProtocolLib.jar//com.comphenix.protocol.injector.PacketFilterManager.sendServerPacket(PacketFilterManager.java:733)
17.10 21:04:46 [Server] WARN at ProtocolLib.jar//com.comphenix.protocol.injector.PacketFilterManager.sendServerPacket(PacketFilterManager.java:687)
17.10 21:04:46 [Server] WARN at HoloMobHealth-2.2.2.2.jar//com.loohp.holomobhealth.protocol.EntityMetadata.lambda$updateEntity$0(EntityMetadata.java:58)
17.10 21:04:46 [Server] WARN at org.bukkit.craftbukkit.v1_17_R1.scheduler.CraftTask.run(CraftTask.java:101)
17.10 21:04:46 [Server] WARN at org.bukkit.craftbukkit.v1_17_R1.scheduler.CraftAsyncTask.run(CraftAsyncTask.java:57)
17.10 21:04:46 [Server] WARN at com.destroystokyo.paper.ServerSchedulerReportingWrapper.run(ServerSchedulerReportingWrapper.java:22)
17.10 21:04:46 [Server] WARN at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1130)
17.10 21:04:46 [Server] WARN at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:630)
17.10 21:04:46 [Server] WARN at java.base/java.lang.Thread.run(Thread.java:831)