Embedded Lab cannot convert from string to system.guid

Got it working.

Had to add a bit of extra to the code supplied in git to some classes as per below:

      /* renamed the variable to indicate it is a string for workspaceId and reportId*/
        private static readonly string strworkspaceId = ConfigurationManager.AppSettings["app-workspace-id"];
        private static string datasetId = ConfigurationManager.AppSettings["dataset-id"];
        private static readonly string strreportId = ConfigurationManager.AppSettings["report-id"];

Then in this class

  public static async Task<ReportEmbeddingData> GetReportEmbeddingData()
        {

            PowerBIClient pbiClient = GetPowerBiClient();
            /* in this class add the conversion to GUID*/
            Guid workspaceId = Guid.Parse(strworkspaceId);
            Guid reportId = Guid.Parse(strreportId);

            var report = await pbiClient.Reports.GetReportInGroupAsync(workspaceId, reportId);
            var embedUrl = report.EmbedUrl;
            var reportName = report.Name;

But in here it has to go back to string in the GUID("D") format

  return new ReportEmbeddingData
            {
                /*in here converted the GUID back to string*/
                reportId = reportId.ToString("D"),
                reportName = reportName,

With the report working.