Program: 80865
Project: 80865
Buggy source:
/** 
 * Called when the plugin is enabled
 */
public void onEnable(){
  try {
    Field field=BungeeTabListPlusAPI.class.getDeclaredField("String_Node_Str");
    field.setAccessible(true);
    field.set(null,this);
  }
 catch (  NoSuchFieldException|IllegalAccessException ex) {
    getLogger().log(Level.SEVERE,"String_Node_Str",ex);
  }
  INSTANCE=this;
  try {
    config=new ConfigManager(plugin);
  }
 catch (  IOException ex) {
    plugin.getLogger().warning("String_Node_Str");
    plugin.getLogger().log(Level.WARNING,null,ex);
    plugin.getLogger().warning("String_Node_Str");
    return;
  }
  if (config.getMainConfig().automaticallySendBugReports) {
    BugReportingService bugReportingService=new BugReportingService(Level.SEVERE,getPlugin().getDescription().getName(),getPlugin().getDescription().getVersion(),command -> plugin.getProxy().getScheduler().runAsync(plugin,command));
    bugReportingService.registerLogger(getLogger());
  }
  try {
    Class.forName("String_Node_Str");
  }
 catch (  ClassNotFoundException ex) {
    is18=false;
  }
  try {
    Class.forName("String_Node_Str");
    isAbove995=true;
  }
 catch (  ClassNotFoundException ex) {
    isAbove995=false;
  }
  try {
    tabListHandlerField=UserConnection.class.getDeclaredField(isVersion18() ? "String_Node_Str" : "String_Node_Str");
  }
 catch (  NoSuchFieldException e) {
    plugin.getLogger().log(Level.SEVERE,"String_Node_Str",e);
    plugin.getLogger().warning("String_Node_Str");
    plugin.getLogger().warning("String_Node_Str");
  }
  legacyPacketAccess=new LegacyPacketAccessImpl();
  if (!legacyPacketAccess.isTabModificationSupported()) {
    plugin.getLogger().warning("String_Node_Str");
    plugin.getLogger().warning("String_Node_Str");
    return;
  }
  if ((!legacyPacketAccess.isScoreboardSupported()) && config.getMainConfig().useScoreboardToBypass16CharLimit) {
    plugin.getLogger().warning("String_Node_Str");
    plugin.getLogger().warning("String_Node_Str");
    config.getMainConfig().useScoreboardToBypass16CharLimit=false;
  }
  resendThread=new ResendThread();
  if (isVersion18()) {
    packetAccess=new PacketAccessImpl(getLogger());
    if (!packetAccess.isTabHeaderFooterSupported()) {
      plugin.getLogger().warning("String_Node_Str");
    }
    File headsFolder=new File(plugin.getDataFolder(),"String_Node_Str");
    if (!headsFolder.exists()) {
      headsFolder.mkdirs();
      try {
        ZipInputStream zipInputStream=new ZipInputStream(new FileInputStream(plugin.getFile()));
        ZipEntry entry;
        while ((entry=zipInputStream.getNextEntry()) != null) {
          if (!entry.isDirectory() && entry.getName().startsWith("String_Node_Str")) {
            try {
              File targetFile=new File(plugin.getDataFolder(),entry.getName());
              targetFile.getParentFile().mkdirs();
              if (!targetFile.exists()) {
                Files.copy(zipInputStream,targetFile.toPath());
                getLogger().info("String_Node_Str" + entry.getName());
              }
            }
 catch (            IOException ex) {
              getLogger().log(Level.SEVERE,"String_Node_Str" + entry.getName(),ex);
            }
          }
        }
        zipInputStream.close();
      }
 catch (      IOException ex) {
        getLogger().log(Level.SEVERE,"String_Node_Str",ex);
      }
    }
    skins=new SkinManagerImpl(plugin,headsFolder);
  }
 else {
    skins=new DummySkinManager();
  }
  fakePlayerManager=new FakePlayerManagerImpl(plugin);
  playerProviders=new ArrayList<>();
  if (plugin.getProxy().getPluginManager().getPlugin("String_Node_Str") != null) {
    redisPlayerManager=new RedisPlayerManager(connectedPlayerManager);
    playerProviders.add(redisPlayerManager);
    plugin.getLogger().info("String_Node_Str");
  }
  playerProviders.add(connectedPlayerManager);
  playerProviders.add(fakePlayerManager);
  plugin.getProxy().registerChannel(Constants.channel);
  bukkitBridge=new BukkitBridge(this);
  pm=new PermissionManager(this);
  dataManager=new DataManager(this,getPermissionManager());
  placeholderManager=new PlaceholderManagerImpl();
  placeholderManager.internalRegisterPlaceholderProvider(new BasicPlaceholders());
  placeholderManager.internalRegisterPlaceholderProvider(new BukkitPlaceholders());
  placeholderManager.internalRegisterPlaceholderProvider(new ColorPlaceholder());
  placeholderManager.internalRegisterPlaceholderProvider(new ConditionalPlaceholders());
  placeholderManager.internalRegisterPlaceholderProvider(new OnlineStatePlaceholder());
  placeholderManager.internalRegisterPlaceholderProvider(new PlayerCountPlaceholder());
  if (plugin.getProxy().getPluginManager().getPlugin("String_Node_Str") != null) {
    placeholderManager.internalRegisterPlaceholderProvider(new RedisBungeePlaceholders());
  }
  placeholderManager.internalRegisterPlaceholderProvider(new TimePlaceholders());
  tabLists=new TabListManager(this);
  if (!tabLists.loadTabLists()) {
    return;
  }
  if (plugin.getProxy().getPluginManager().getPlugin("String_Node_Str") != null) {
    protocolVersionProvider=new ProtocolSupportVersionProvider();
  }
 else {
    protocolVersionProvider=new BungeeProtocolVersionProvider();
  }
  ProxyServer.getInstance().getPluginManager().registerListener(plugin,listener);
  plugin.getProxy().getScheduler().runAsync(plugin,resendThread);
  restartRefreshThread();
  try {
    Thread.currentThread().getContextClassLoader().loadClass("String_Node_Str");
    ProxyServer.getInstance().getPluginManager().registerCommand(plugin,new SuperCommand(this));
    ProxyServer.getInstance().getScheduler().schedule(plugin,new UpdateNotifier(this),15,15,TimeUnit.MINUTES);
  }
 catch (  Exception ex) {
    ProxyServer.getInstance().getPluginManager().registerCommand(plugin,new OldSuperCommand(this));
  }
  try {
    Metrics metrics=new Metrics(plugin);
    metrics.start();
  }
 catch (  IOException e) {
    plugin.getLogger().log(Level.SEVERE,"String_Node_Str",e);
  }
  if (config.getMainConfig().checkForUpdates) {
    updateChecker=new UpdateChecker(plugin);
  }
  ProtocolManager protocolManager=new ProtocolManager(plugin);
  protocolManager.enable();
  int[] serversHash={getProxy().getServers().hashCode()};
  getProxy().getScheduler().schedule(plugin,() -> {
    int hash=getProxy().getServers().hashCode();
    if (hash != serversHash[0]) {
      serversHash[0]=hash;
      getLogger().info("String_Node_Str");
      reload();
    }
  }
,1,1,TimeUnit.MINUTES);
  placeholderAPIHook=new PlaceholderAPIHook(this);
  placeholderAPIHook.onLoad();
}

Fixed version (ground truth):
/** 
 * Called when the plugin is enabled
 */
public void onEnable(){
  try {
    Field field=BungeeTabListPlusAPI.class.getDeclaredField("String_Node_Str");
    field.setAccessible(true);
    field.set(null,this);
  }
 catch (  NoSuchFieldException|IllegalAccessException ex) {
    getLogger().log(Level.SEVERE,"String_Node_Str",ex);
  }
  INSTANCE=this;
  try {
    Team.class.getDeclaredMethod("String_Node_Str",String.class);
    is19=true;
  }
 catch (  NoSuchMethodException e) {
    is19=false;
  }
  try {
    config=new ConfigManager(plugin);
  }
 catch (  IOException ex) {
    plugin.getLogger().warning("String_Node_Str");
    plugin.getLogger().log(Level.WARNING,null,ex);
    plugin.getLogger().warning("String_Node_Str");
    return;
  }
  if (config.getMainConfig().automaticallySendBugReports) {
    BugReportingService bugReportingService=new BugReportingService(Level.SEVERE,getPlugin().getDescription().getName(),getPlugin().getDescription().getVersion(),command -> plugin.getProxy().getScheduler().runAsync(plugin,command));
    bugReportingService.registerLogger(getLogger());
  }
  try {
    Class.forName("String_Node_Str");
  }
 catch (  ClassNotFoundException ex) {
    is18=false;
  }
  try {
    Class.forName("String_Node_Str");
    isAbove995=true;
  }
 catch (  ClassNotFoundException ex) {
    isAbove995=false;
  }
  try {
    tabListHandlerField=UserConnection.class.getDeclaredField(isVersion18() ? "String_Node_Str" : "String_Node_Str");
  }
 catch (  NoSuchFieldException e) {
    plugin.getLogger().log(Level.SEVERE,"String_Node_Str",e);
    plugin.getLogger().warning("String_Node_Str");
    plugin.getLogger().warning("String_Node_Str");
  }
  legacyPacketAccess=new LegacyPacketAccessImpl();
  if (!legacyPacketAccess.isTabModificationSupported()) {
    plugin.getLogger().warning("String_Node_Str");
    plugin.getLogger().warning("String_Node_Str");
    return;
  }
  if ((!legacyPacketAccess.isScoreboardSupported()) && config.getMainConfig().useScoreboardToBypass16CharLimit) {
    plugin.getLogger().warning("String_Node_Str");
    plugin.getLogger().warning("String_Node_Str");
    config.getMainConfig().useScoreboardToBypass16CharLimit=false;
  }
  resendThread=new ResendThread();
  if (isVersion18()) {
    packetAccess=new PacketAccessImpl(getLogger());
    if (!packetAccess.isTabHeaderFooterSupported()) {
      plugin.getLogger().warning("String_Node_Str");
    }
    File headsFolder=new File(plugin.getDataFolder(),"String_Node_Str");
    if (!headsFolder.exists()) {
      headsFolder.mkdirs();
      try {
        ZipInputStream zipInputStream=new ZipInputStream(new FileInputStream(plugin.getFile()));
        ZipEntry entry;
        while ((entry=zipInputStream.getNextEntry()) != null) {
          if (!entry.isDirectory() && entry.getName().startsWith("String_Node_Str")) {
            try {
              File targetFile=new File(plugin.getDataFolder(),entry.getName());
              targetFile.getParentFile().mkdirs();
              if (!targetFile.exists()) {
                Files.copy(zipInputStream,targetFile.toPath());
                getLogger().info("String_Node_Str" + entry.getName());
              }
            }
 catch (            IOException ex) {
              getLogger().log(Level.SEVERE,"String_Node_Str" + entry.getName(),ex);
            }
          }
        }
        zipInputStream.close();
      }
 catch (      IOException ex) {
        getLogger().log(Level.SEVERE,"String_Node_Str",ex);
      }
    }
    skins=new SkinManagerImpl(plugin,headsFolder);
  }
 else {
    skins=new DummySkinManager();
  }
  fakePlayerManager=new FakePlayerManagerImpl(plugin);
  playerProviders=new ArrayList<>();
  if (plugin.getProxy().getPluginManager().getPlugin("String_Node_Str") != null) {
    redisPlayerManager=new RedisPlayerManager(connectedPlayerManager);
    playerProviders.add(redisPlayerManager);
    plugin.getLogger().info("String_Node_Str");
  }
  playerProviders.add(connectedPlayerManager);
  playerProviders.add(fakePlayerManager);
  plugin.getProxy().registerChannel(Constants.channel);
  bukkitBridge=new BukkitBridge(this);
  pm=new PermissionManager(this);
  dataManager=new DataManager(this,getPermissionManager());
  placeholderManager=new PlaceholderManagerImpl();
  placeholderManager.internalRegisterPlaceholderProvider(new BasicPlaceholders());
  placeholderManager.internalRegisterPlaceholderProvider(new BukkitPlaceholders());
  placeholderManager.internalRegisterPlaceholderProvider(new ColorPlaceholder());
  placeholderManager.internalRegisterPlaceholderProvider(new ConditionalPlaceholders());
  placeholderManager.internalRegisterPlaceholderProvider(new OnlineStatePlaceholder());
  placeholderManager.internalRegisterPlaceholderProvider(new PlayerCountPlaceholder());
  if (plugin.getProxy().getPluginManager().getPlugin("String_Node_Str") != null) {
    placeholderManager.internalRegisterPlaceholderProvider(new RedisBungeePlaceholders());
  }
  placeholderManager.internalRegisterPlaceholderProvider(new TimePlaceholders());
  tabLists=new TabListManager(this);
  if (!tabLists.loadTabLists()) {
    return;
  }
  if (plugin.getProxy().getPluginManager().getPlugin("String_Node_Str") != null) {
    protocolVersionProvider=new ProtocolSupportVersionProvider();
  }
 else {
    protocolVersionProvider=new BungeeProtocolVersionProvider();
  }
  ProxyServer.getInstance().getPluginManager().registerListener(plugin,listener);
  plugin.getProxy().getScheduler().runAsync(plugin,resendThread);
  restartRefreshThread();
  try {
    Thread.currentThread().getContextClassLoader().loadClass("String_Node_Str");
    ProxyServer.getInstance().getPluginManager().registerCommand(plugin,new SuperCommand(this));
    ProxyServer.getInstance().getScheduler().schedule(plugin,new UpdateNotifier(this),15,15,TimeUnit.MINUTES);
  }
 catch (  Exception ex) {
    ProxyServer.getInstance().getPluginManager().registerCommand(plugin,new OldSuperCommand(this));
  }
  try {
    Metrics metrics=new Metrics(plugin);
    metrics.start();
  }
 catch (  IOException e) {
    plugin.getLogger().log(Level.SEVERE,"String_Node_Str",e);
  }
  if (config.getMainConfig().checkForUpdates) {
    updateChecker=new UpdateChecker(plugin);
  }
  ProtocolManager protocolManager=new ProtocolManager(plugin);
  protocolManager.enable();
  int[] serversHash={getProxy().getServers().hashCode()};
  getProxy().getScheduler().schedule(plugin,() -> {
    int hash=getProxy().getServers().hashCode();
    if (hash != serversHash[0]) {
      serversHash[0]=hash;
      getLogger().info("String_Node_Str");
      reload();
    }
  }
,1,1,TimeUnit.MINUTES);
  placeholderAPIHook=new PlaceholderAPIHook(this);
  placeholderAPIHook.onLoad();
}