Program: 93763
Project: 93763
Buggy source:
@EventHandler public void onPlayerRespawn(final PlayerRespawnEvent event){
  final Player player=event.getPlayer();
  final String spawn=ConfigEnum.GSPAWN.getString();
  Location loc=null;
  String worldName=player.getWorld().getName();
  final Environment worldEnv=player.getWorld().getEnvironment();
  if (ConfigEnum.RESPAWN_BEHAVIOR.getBoolean()) {
    if (worldEnv.equals(Environment.NETHER) || worldEnv.equals(Environment.THE_END)) {
      worldName=ACWorld.getWorld(ConfigEnum.RESPAWN_WORLD.getString()).getName();
      if (worldName.isEmpty() || worldName == null) {
        worldName=player.getWorld().getName();
      }
    }
  }
  try {
    if (spawn.isEmpty() || spawn.equalsIgnoreCase("String_Node_Str")) {
      loc=ACWorld.getWorld(worldName).getSpawn();
      event.setRespawnLocation(loc);
    }
 else     if (spawn.equalsIgnoreCase("String_Node_Str")) {
      loc=ACPlayer.getPlayer(player).getHome(worldName);
      if (loc == null) {
        loc=ACWorld.getWorld(worldName).getSpawn();
      }
      event.setRespawnLocation(loc);
    }
 else     if (spawn.equalsIgnoreCase("String_Node_Str")) {
      try {
        loc=player.getBedSpawnLocation();
        if (loc == null) {
          loc=ACWorld.getWorld(worldName).getSpawn();
        }
      }
 catch (      final NullPointerException e) {
        loc=ACWorld.getWorld(worldName).getSpawn();
      }
      event.setRespawnLocation(loc);
    }
 else     if (spawn.equalsIgnoreCase("String_Node_Str")) {
      loc=ACHelper.getInstance().getGroupSpawnLocation(player);
      event.setRespawnLocation(loc);
    }
  }
 catch (  WorldNotLoaded e) {
  }
}

Fixed version (ground truth):
@EventHandler public void onPlayerRespawn(final PlayerRespawnEvent event){
  final Player player=event.getPlayer();
  final String spawn=ConfigEnum.GSPAWN.getString();
  Location loc=null;
  String worldName=player.getWorld().getName();
  final Environment worldEnv=player.getWorld().getEnvironment();
  if (ConfigEnum.RESPAWN_BEHAVIOR.getBoolean()) {
    if (worldEnv.equals(Environment.NETHER) || worldEnv.equals(Environment.THE_END)) {
      worldName=ACWorld.getWorld(ConfigEnum.RESPAWN_WORLD.getString()).getName();
      if (worldName.isEmpty() || worldName == null) {
        worldName=player.getWorld().getName();
      }
    }
  }
  try {
    if (spawn.isEmpty() || spawn.equalsIgnoreCase("String_Node_Str")) {
      loc=ACWorld.getWorld(worldName).getSpawn();
      event.setRespawnLocation(loc);
    }
 else     if (spawn.equalsIgnoreCase("String_Node_Str")) {
      loc=ACPlayer.getPlayer(player).getHome(worldName);
      if (loc == null) {
        loc=ACWorld.getWorld(worldName).getSpawn();
      }
      event.setRespawnLocation(loc);
    }
 else     if (spawn.equalsIgnoreCase("String_Node_Str")) {
      try {
        loc=player.getBedSpawnLocation();
        if (loc == null) {
          loc=ACWorld.getWorld(worldName).getSpawn();
        }
      }
 catch (      final NullPointerException e) {
        loc=ACWorld.getWorld(worldName).getSpawn();
      }
      event.setRespawnLocation(loc);
    }
 else     if (spawn.equalsIgnoreCase("String_Node_Str")) {
      loc=ACHelper.getInstance().getGroupSpawnLocation(player);
      event.setRespawnLocation(loc);
    }
  }
 catch (  final WorldNotLoaded e) {
  }
}