Cannot resolve symbol 'JavaPlugin' intelij

Question

I'm trying to create a minecraft plugin and I keep getting this error when I hover over JavaPlugin.

Error when hover over javaplugin

I went into project structure > modules > dependencies > and added the spigot 1.18.2 jar. however I still get this error. Pls help.

here's what my code looks like:

package net.superiorcraft;

import org.bukkit.plugin.java.JavaPlugin;

public class myfirstplugin extends JavaPlugin {

}