Solved NoClassDefFoundError

Hi,
i'm currently working on a Plugin for 1.16.4 and ran into a quite unusual problem.
At start the server is unable to load my plugin due to a NoClassDeffFoundError caused by the
net.kyori.adventure.text package

Code:

org.bukkit.plugin.InvalidPluginException: java.lang.NoClassDefFoundError: net/kyori/adventure/text/Component
   at org.bukkit.plugin.java.JavaPluginLoader.loadPlugin(JavaPluginLoader.java:139) ~[server.jar:git-Spigot-37d799b-3eb7236]
   at org.bukkit.plugin.SimplePluginManager.loadPlugin(SimplePluginManager.java:394) ~[server.jar:git-Spigot-37d799b-3eb7236]
   at org.bukkit.plugin.SimplePluginManager.loadPlugins(SimplePluginManager.java:301) ~[server.jar:git-Spigot-37d799b-3eb7236]
   at org.bukkit.craftbukkit.v1_16_R3.CraftServer.loadPlugins(CraftServer.java:383) ~[server.jar:git-Spigot-37d799b-3eb7236]
   at net.minecraft.server.v1_16_R3.DedicatedServer.init(DedicatedServer.java:185) ~[server.jar:git-Spigot-37d799b-3eb7236]
   at net.minecraft.server.v1_16_R3.MinecraftServer.w(MinecraftServer.java:808) ~[server.jar:git-Spigot-37d799b-3eb7236]
   at net.minecraft.server.v1_16_R3.MinecraftServer.lambda$0(MinecraftServer.java:164) ~[server.jar:git-Spigot-37d799b-3eb7236]
   at java.lang.Thread.run(Thread.java:830) [?:?]

After a google search I found that this Error is caused by the ClassLoader not finding the .class Files. However my IDE (Intellij) and Maven are telling me that the package is imported and in the classpath.

I was able to track the source of this error down to these lines of code:

Code:

public static void sendLink(Player p, String message, String url){
     TextComponent component =Component.text(message);  
     component.clickEvent(ClickEvent.clickEvent(ClickEvent.Action.OPEN_URL, url));
     p.sendMessage(component);
}

this is a utility method to send clickable texts to the player with a link to a webpage.

I would appreciate any kind of help.

 

Do you have any other plugins that use the same classname?

 

No.
But by using the net.md_5.bungee.api.chat library and the Player.spigot().sendMessage() method it works.
However I still don't know what exactly caused the error.

 

I am having the same exact error... Components themselves were hard concepts for me because I am used to the old / deprecated methods, and now this

 

Sounds like an ambiguous method to me.