WebMarkupMin.Core.MarkupMinificationException: Category: HTML_PARSING_ERROR Message: In the start tag <meta> found invalid characters. File: /huong-dan/hoc-guitar-an-lien_97.html Line number: 31 Column number: 374 Source fragment: Line 30: Line 31: … bai hat co hop am, sheet, bản nhạc, guitar tab" /> ---------------------------------------------------------^ at WebMarkupMin.Core.Loggers.ThrowExceptionLogger.Error(String category, String message, String filePath, Int32 lineNumber, Int32 columnNumber, String sourceFragment) at WebMarkupMin.Core.GenericHtmlMinifier.Minify(String content, String fileContext, Encoding encoding, Boolean generateStatistics) at WebMarkupMin.AspNet4.Common.MarkupMinificationFilterStream.Close() at System.Web.HttpWriter.FilterIntegrated(Boolean finalFiltering, IIS7WorkerRequest wr) at System.Web.HttpResponse.FilterOutput() at System.Web.HttpApplication.CallFilterExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() at System.Web.HttpApplication.ExecuteStepImpl(IExecutionStep step) at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously)