[11:37:15][main/INFO] No settings file here, may be first loading.
[11:37:16][UpdateChecker/WARN] Failed to get update url.
java.net.UnknownHostException: huangyuhui.duapp.com
    at java.net.AbstractPlainSocketImpl.connect(Unknown Source)
    at java.net.PlainSocketImpl.connect(Unknown Source)
    at java.net.SocksSocketImpl.connect(Unknown Source)
    at java.net.Socket.connect(Unknown Source)
    at java.net.Socket.connect(Unknown Source)
    at sun.net.NetworkClient.doConnect(Unknown Source)
    at sun.net.www.http.HttpClient.openServer(Unknown Source)
    at sun.net.www.http.HttpClient.openServer(Unknown Source)
    at sun.net.www.http.HttpClient.<init>(Unknown Source)
    at sun.net.www.http.HttpClient.New(Unknown Source)
    at sun.net.www.http.HttpClient.New(Unknown Source)
    at sun.net.www.protocol.http.HttpURLConnection.getNewHttpClient(Unknown Source)
    at sun.net.www.protocol.http.HttpURLConnection.plainConnect0(Unknown Source)
    at sun.net.www.protocol.http.HttpURLConnection.plainConnect(Unknown Source)
    at sun.net.www.protocol.http.HttpURLConnection.connect(Unknown Source)
    at sun.net.www.protocol.http.HttpURLConnection.getInputStream0(Unknown Source)
    at sun.net.www.protocol.http.HttpURLConnection.getInputStream(Unknown Source)
    at org.jackhuang.hellominecraft.utils.NetUtils.doGet(NetUtils.java:66)
    at org.jackhuang.hellominecraft.utils.NetUtils.doGet(NetUtils.java:70)
    at org.jackhuang.hellominecraft.utils.UpdateChecker.run(UpdateChecker.java:50)
[11:37:26][AWT-EventQueue-0/INFO] Start generating launching command...
[11:37:26][Game Launcher/WARN] Login failed by method: 离线模式, state: false, error reason: 你还未设置用户名！
[11:37:33][AWT-EventQueue-0/INFO] Start generating launching command...
[11:37:33][Game Launcher/INFO] *** Make shell command ***
[11:37:33][Game Launcher/INFO] On making head command.
[11:37:33][Game Launcher/INFO] Java Version: 1.8.0_45
[11:37:33][Game Launcher/INFO] Java Platform: 64
[11:37:33][Game Launcher/INFO] System Platform: 64
[11:37:33][Game Launcher/INFO] System Physical Memory: 8130
[11:37:33][Game Launcher/ERROR]
---- Hello Minecraft! Crash Report ----
  Version: 2.3.5.4
  Time: 2019-05-02 11:37:33
  Thread: Thread[Game Launcher,6,main]
  Content:
    java.lang.NullPointerException
    at java.util.StringTokenizer.<init>(Unknown Source)
    at java.util.StringTokenizer.<init>(Unknown Source)
    at org.jackhuang.hellominecraft.utils.StrUtils.tokenize(StrUtils.java:201)
    at org.jackhuang.hellominecraft.utils.StrUtils.tokenize(StrUtils.java:196)
    at org.jackhuang.hellominecraft.launcher.launch.MinecraftLoader.makeSelf(MinecraftLoader.java:77)
    at org.jackhuang.hellominecraft.launcher.launch.AbstractMinecraftLoader.makeLaunchingCommand(AbstractMinecraftLoader.java:148)
    at org.jackhuang.hellominecraft.launcher.launch.GameLauncher.makeLaunchCommand(GameLauncher.java:115)
    at org.jackhuang.hellominecraft.launcher.views.MainPagePanel$10.run(MainPagePanel.java:392)

-- System Details --
  Operating System: Windows 7 (amd64) version 6.1
  Java Version: 1.8.0_45, Oracle Corporation
  Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
[11:37:33][Thread-6/WARN] Failed to post.
java.net.UnknownHostException: huangyuhui.duapp.com
    at java.net.AbstractPlainSocketImpl.connect(Unknown Source)
    at java.net.PlainSocketImpl.connect(Unknown Source)
    at java.net.SocksSocketImpl.connect(Unknown Source)
    at java.net.Socket.connect(Unknown Source)
    at java.net.Socket.connect(Unknown Source)
    at sun.net.NetworkClient.doConnect(Unknown Source)
    at sun.net.www.http.HttpClient.openServer(Unknown Source)
    at sun.net.www.http.HttpClient.openServer(Unknown Source)
    at sun.net.www.http.HttpClient.<init>(Unknown Source)
    at sun.net.www.http.HttpClient.New(Unknown Source)
    at sun.net.www.http.HttpClient.New(Unknown Source)
    at sun.net.www.protocol.http.HttpURLConnection.getNewHttpClient(Unknown Source)
    at sun.net.www.protocol.http.HttpURLConnection.plainConnect0(Unknown Source)
    at sun.net.www.protocol.http.HttpURLConnection.plainConnect(Unknown Source)
    at sun.net.www.protocol.http.HttpURLConnection.connect(Unknown Source)
    at sun.net.www.protocol.http.HttpURLConnection.getOutputStream0(Unknown Source)
    at sun.net.www.protocol.http.HttpURLConnection.getOutputStream(Unknown Source)
    at org.jackhuang.hellominecraft.utils.NetUtils.post(NetUtils.java:134)
    at org.jackhuang.hellominecraft.launcher.utils.CrashReporter.lambda$reportToServer$13(CrashReporter.java:115)
    at org.jackhuang.hellominecraft.launcher.utils.CrashReporter.access$lambda$1(CrashReporter.java)
    at org.jackhuang.hellominecraft.launcher.utils.CrashReporter$$Lambda$2.run(Unknown Source)
    at java.lang.Thread.run(Unknown Source)
null

请使用最新版HMCL启动器