Program: 171212
Project: 171212
Buggy source:
@Override public void onMessage(WebSocket webSocket,String s){
  JSONObject json=new JSONObject(s);
  log.info(s);
  if (webSocket.isClosing()) {
    log.error("String_Node_Str" + webSocket.getRemoteSocketAddress().toString());
  }
switch (json.getString("String_Node_Str")) {
case "String_Node_Str":
    long guildId=Long.parseLong(json.getString("String_Node_Str"));
  AudioManager manager=contextMap.get(webSocket).getCore(getShardId(webSocket,json)).getAudioManager(json.getString("String_Node_Str"));
if (manager.getConnectionListener() == null) {
  manager.setConnectionListener(new DebugConnectionListener(guildId));
}
if (manager.isConnected() || manager.isAttemptingToConnect()) {
manager.closeAudioConnection();
log.info("String_Node_Str",guildId);
}
manager.openAudioConnection(json.getString("String_Node_Str"));
break;
case "String_Node_Str":
contextMap.get(webSocket).getCore(getShardId(webSocket,json)).provideVoiceServerUpdate(json.getString("String_Node_Str"),json.getJSONObject("String_Node_Str"));
break;
case "String_Node_Str":
contextMap.get(webSocket).getCore(getShardId(webSocket,json)).getAudioManager(json.getString("String_Node_Str")).closeAudioConnection();
break;
case "String_Node_Str":
((CoreClientImpl)contextMap.get(webSocket).getCore(getShardId(webSocket,json)).getClient()).provideValidation(json.getString("String_Node_Str"),json.optString("String_Node_Str"),json.getBoolean("String_Node_Str"));
break;
case "String_Node_Str":
((CoreClientImpl)contextMap.get(webSocket).getCore(json.getInt("String_Node_Str")).getClient()).provideIsConnected(json.getBoolean("String_Node_Str"));
break;
case "String_Node_Str":
try {
Player player=contextMap.get(webSocket).getPlayer(json.getString("String_Node_Str"));
AudioTrack track=Util.toAudioTrack(json.getString("String_Node_Str"));
if (json.has("String_Node_Str")) {
track.setPosition(json.getLong("String_Node_Str"));
}
if (json.has("String_Node_Str")) {
track.setMarker(new TrackMarker(json.getLong("String_Node_Str"),new TrackEndMarkerHandler(player)));
}
if (json.optBoolean("String_Node_Str",false)) {
player.setPause(true);
}
player.play(track);
SocketContext context=contextMap.get(webSocket);
context.getCore(getShardId(webSocket,json)).getAudioManager(json.getString("String_Node_Str")).setSendingHandler(context.getPlayer(json.getString("String_Node_Str")));
sendPlayerUpdate(webSocket,player);
}
 catch (IOException e) {
throw new RuntimeException(e);
}
break;
case "String_Node_Str":
Player player=contextMap.get(webSocket).getPlayer(json.getString("String_Node_Str"));
player.stop();
break;
case "String_Node_Str":
Player player2=contextMap.get(webSocket).getPlayer(json.getString("String_Node_Str"));
player2.setPause(json.getBoolean("String_Node_Str"));
sendPlayerUpdate(webSocket,player2);
break;
case "String_Node_Str":
Player player3=contextMap.get(webSocket).getPlayer(json.getString("String_Node_Str"));
player3.seekTo(json.getLong("String_Node_Str"));
sendPlayerUpdate(webSocket,player3);
break;
case "String_Node_Str":
Player player4=contextMap.get(webSocket).getPlayer(json.getString("String_Node_Str"));
player4.setVolume(json.getInt("String_Node_Str"));
break;
default :
log.warn("String_Node_Str" + json.getString("String_Node_Str"));
break;
}
}

Fixed version (ground truth):
@Override public void onMessage(WebSocket webSocket,String s){
  JSONObject json=new JSONObject(s);
  log.info(s);
  if (webSocket.isClosing()) {
    log.error("String_Node_Str" + webSocket.getRemoteSocketAddress().toString());
  }
switch (json.getString("String_Node_Str")) {
case "String_Node_Str":
    long guildId=Long.parseLong(json.getString("String_Node_Str"));
  AudioManager manager=contextMap.get(webSocket).getCore(getShardId(webSocket,json)).getAudioManager(json.getString("String_Node_Str"));
if (manager.getConnectionListener() == null) {
  manager.setConnectionListener(new DebugConnectionListener(guildId));
}
if (manager.isConnected() || manager.isAttemptingToConnect()) {
manager.closeAudioConnection();
log.info("String_Node_Str",guildId);
}
manager.openAudioConnection(json.getString("String_Node_Str"));
break;
case "String_Node_Str":
contextMap.get(webSocket).getCore(getShardId(webSocket,json)).provideVoiceServerUpdate(json.getString("String_Node_Str"),json.getJSONObject("String_Node_Str"));
break;
case "String_Node_Str":
contextMap.get(webSocket).getCore(getShardId(webSocket,json)).getAudioManager(json.getString("String_Node_Str")).closeAudioConnection();
break;
case "String_Node_Str":
((CoreClientImpl)contextMap.get(webSocket).getCore(getShardId(webSocket,json)).getClient()).provideValidation(json.getString("String_Node_Str"),json.optString("String_Node_Str"),json.getBoolean("String_Node_Str"));
break;
case "String_Node_Str":
((CoreClientImpl)contextMap.get(webSocket).getCore(json.getInt("String_Node_Str")).getClient()).provideIsConnected(json.getBoolean("String_Node_Str"));
break;
case "String_Node_Str":
try {
Player player=contextMap.get(webSocket).getPlayer(json.getString("String_Node_Str"));
AudioTrack track=Util.toAudioTrack(json.getString("String_Node_Str"));
if (json.has("String_Node_Str")) {
track.setPosition(json.getLong("String_Node_Str"));
}
if (json.has("String_Node_Str")) {
track.setMarker(new TrackMarker(json.getLong("String_Node_Str"),new TrackEndMarkerHandler(player)));
}
player.setPause(json.optBoolean("String_Node_Str",false));
player.play(track);
SocketContext context=contextMap.get(webSocket);
context.getCore(getShardId(webSocket,json)).getAudioManager(json.getString("String_Node_Str")).setSendingHandler(context.getPlayer(json.getString("String_Node_Str")));
sendPlayerUpdate(webSocket,player);
}
 catch (IOException e) {
throw new RuntimeException(e);
}
break;
case "String_Node_Str":
Player player=contextMap.get(webSocket).getPlayer(json.getString("String_Node_Str"));
player.stop();
break;
case "String_Node_Str":
Player player2=contextMap.get(webSocket).getPlayer(json.getString("String_Node_Str"));
player2.setPause(json.getBoolean("String_Node_Str"));
sendPlayerUpdate(webSocket,player2);
break;
case "String_Node_Str":
Player player3=contextMap.get(webSocket).getPlayer(json.getString("String_Node_Str"));
player3.seekTo(json.getLong("String_Node_Str"));
sendPlayerUpdate(webSocket,player3);
break;
case "String_Node_Str":
Player player4=contextMap.get(webSocket).getPlayer(json.getString("String_Node_Str"));
player4.setVolume(json.getInt("String_Node_Str"));
break;
default :
log.warn("String_Node_Str" + json.getString("String_Node_Str"));
break;
}
}