I encounter a technical error " Index was outside the bounds of the array". on All Posts, under DNNGo.xBlog 07.09.04. I am not able to view All Posts since then. How to fix it?

I copy pasted here the Error message. Thanks.

Error: 最新消息 is currently unavailable. DotNetNuke.Services.Exceptions.ModuleLoadException: Invocation of method 'GoUrl' in DNNGo.Modules.xBlog.TemplateFormat threw exception System.IndexOutOfRangeException : Index was outside the bounds of the array. ---> CNVelocity.Exception.MethodInvocationException: Invocation of method 'GoUrl' in DNNGo.Modules.xBlog.TemplateFormat threw exception System.IndexOutOfRangeException : Index was outside the bounds of the array. ---> System.IndexOutOfRangeException: Index was outside the bounds of the array. at DNNGo.Modules.xBlog.Pinyin.convertCh(String Chstr) at DNNGo.Modules.xBlog.Common.CreateFriendlySlugTitle(String pagename) at DNNGo.Modules.xBlog.CommonFriendlyUrls.ArticleFriendlyUrl(DNNGo_xBlog_Articles DataItem, basePortalModule pmb) at DNNGo.Modules.xBlog.TemplateFormat.GoUrl(DNNGo_xBlog_Articles DataItem) --- End of inner exception stack trace --- at CNVelocity.Runtime.Parser.Node.ASTMethod.Execute(Object o, IInternalContextAdapter context) at CNVelocity.Runtime.Parser.Node.ASTReference.Execute(Object o, IInternalContextAdapter context) at CNVelocity.Runtime.Parser.Node.ASTReference.Render(IInternalContextAdapter context, TextWriter writer) at CNVelocity.Runtime.Parser.Node.ASTBlock.Render(IInternalContextAdapter context, TextWriter writer) at CNVelocity.Runtime.Parser.Node.ASTIfStatement.Render(IInternalContextAdapter context, TextWriter writer) at CNVelocity.Runtime.Parser.Node.ASTBlock.Render(IInternalContextAdapter context, TextWriter writer) at CNVelocity.Runtime.Directive.Foreach.Render(IInternalContextAdapter context, TextWriter writer, INode node) at CNVelocity.Runtime.Parser.Node.ASTDirective.Render(IInternalContextAdapter context, TextWriter writer) at CNVelocity.Runtime.Parser.Node.ASTBlock.Render(IInternalContextAdapter context, TextWriter writer) at CNVelocity.Runtime.Parser.Node.ASTIfStatement.Render(IInternalContextAdapter context, TextWriter writer) at CNVelocity.Runtime.Parser.Node.SimpleNode.Render(IInternalContextAdapter context, TextWriter writer) at CNVelocity.Template.Merge(IContext context, TextWriter writer) at DNNGo.Modules.xBlog.VelocityHelper.Display(String templatFileName) at DNNGo.Modules.xBlog.basePortalModule.ViewTemplate(XmlDBEntity Theme, String ThemeFile, Hashtable Puts, TemplateFormat xf) at DNNGo.Modules.xBlog.View_Article_List.DataListBind(XmlDBEntity XmlDB) at DNNGo.Modules.xBlog.View_Article_List.Page_Load(Object sender, EventArgs e) --- End of inner exception stack trace ---