How to fix NoSuchMethodError in java

I am trying to run JDA Discord Bot, but getting this error:

[JDA MainWS-ReadThread] INFO net.dv8tion.jda.core.requests.WebSocketClient - Connected to WebSocket
[JDA MainWS-ReadThread] ERROR net.dv8tion.jda.core.requests.WebSocketClient - There was an error in the WebSocket connection
java.lang.NoSuchMethodError: org.json.JSONArray.iterator()Ljava/util/Iterator;
    at net.dv8tion.jda.core.requests.WebSocketClient.updateTraces(WebSocketClient.java:165)
    at net.dv8tion.jda.core.requests.WebSocketClient.onEvent(WebSocketClient.java:797)
    at net.dv8tion.jda.core.requests.WebSocketClient.handleEvent(WebSocketClient.java:745)
    at net.dv8tion.jda.core.requests.WebSocketClient.onBinaryMessage(WebSocketClient.java:903)
    at com.neovisionaries.ws.client.ListenerManager.callOnBinaryMessage(ListenerManager.java:368)
    at com.neovisionaries.ws.client.ReadingThread.callOnBinaryMessage(ReadingThread.java:270)
    at com.neovisionaries.ws.client.ReadingThread.handleBinaryFrame(ReadingThread.java:990)
    at com.neovisionaries.ws.client.ReadingThread.handleFrame(ReadingThread.java:749)
    at com.neovisionaries.ws.client.ReadingThread.main(ReadingThread.java:108)
    at com.neovisionaries.ws.client.ReadingThread.runMain(ReadingThread.java:64)
    at com.neovisionaries.ws.client.WebSocketThread.run(WebSocketThread.java:45)

I can't find what's wrong,

this is my pom.xml: https://hasteb.in/agaseniz.xml
also I have these libraries in my Referenced Libraries: http://prntscr.com/nfdquv

I have asked at the JDA GitHub but they say I have to get the latest org.json which I already have. So I am confused.

Hope someone can help me there.

Solution

Indeed, the org.json.JSONArray.iterator() did not exist from the beginning, but was added later.

Your pom.xml looks good, but in Referenced Libraries there is json-simple-1.1.1.jar instead of json-20180813.jar.

Right-click the project and choose Maven > Update Project...