• i'm using the latest build for your server version
• This isn't an issue caused by another plugin

I make a plugin using with protocollib. But when i imported, it was error that IntelliJ IDEA cant understand

import com.comphenix.protocol.ProtocolLibrary;
import com.comphenix.protocol.events.PacketContainer;
import com.comphenix.protocol.wrappers.BlockPosition;
import com.comphenix.protocol.PacketType;

use any other plugin. This one is death. Developer Quit....

protocolLib dead? nice joke

4.8.0 is not the latest version of protocollib
and, I suggest you to use Paper instead of spigot now

i use 5.1.0 now, and i use and papermc of course.