I am trying to add Discord functionality through javacord. I managed to get Javacord imported and can run, however I get the following error after trying to call the .login method. Code (Java): java.lang.NoSuchMethodError: 'void org.apache.logging.log4j.Logger.debug(java.lang.String, java.lang.Object, java.lang.Object)' at org.javacord.core.DiscordApiBuilderDelegateImpl.login(DiscordApiBuilderDelegateImpl.java:186) ~[javacord-3.3.2-shaded.jar:?] at org.javacord.api.DiscordApiBuilder.login(DiscordApiBuilder.java:41) ~[javacord-3.3.2-shaded.jar:?] at club.bridgepractice.Bridge.Bridge.onEnable(Bridge.java:124) ~[?:?] at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlugin.java:321) ~[spigot-1.8.8.jar:git-Spigot-21fe707-e1ebe52] ... This error happens because the code inside the login method contains a call to a Log4j logger with a string and two objects. I have a feeling that this is happening because I have multiple versions of log4j in my class path, one from spigot and one from the shaded javacord jar. The spigot one has a method with the signature (String, Object...) and the javacord has one with the signature (String, Object Object). To my knowledge of java either should work. Any help is appreciated.