Quickfixes

ClockifyReport/Business/ReportGenerator.cs

         public static Workbook GenerateReportContent(Root reportObject)
         {
             var excelFile = new Workbook();
+            excelFile.Worksheets.Clear();
             var ws = excelFile.Worksheets.Add("Content");
 
             AddReportItems(reportObject, ws);
             TimeSpan t, time, time1;
             int row = 1;
             string[] sectionNames = { "User     ", "Description     ", "Time (h)     ", "Time (decimal)     " };
-            decimal totalAmountSum = 0;
             List<string> usersDecimalHours = new List<string>();
 
             for (int i = 0; i < sectionNames.Length; i++)

ClockifyReport/ClockifyReport.csproj

   <ItemGroup>
 	  <PackageReference Include="Azure.Storage.Blobs" Version="12.12.0" />
 	  <PackageReference Include="Azure.Storage.Queues" Version="12.10.0" />
+	  <PackageReference Include="FreeSpire.XLS" Version="12.7.0" />
 	  <PackageReference Include="MailKit" Version="3.3.0" />
 	  <PackageReference Include="Microsoft.AspNet.WebApi.Client" Version="5.2.9" />
 	  <PackageReference Include="Microsoft.AspNetCore.Mvc.Abstractions" Version="2.2.0" />
 	  <PackageReference Include="Microsoft.Azure.WebJobs.Extensions.SendGrid" Version="3.0.2" />
 	  <PackageReference Include="Microsoft.Build.Tasks.Core" Version="17.2.0" />
 	  <PackageReference Include="RestSharp" Version="108.0.1" />
-	  <PackageReference Include="Spire.XLS" Version="12.7.1" />
 	  <PackageReference Include="System.Core" Version="3.5.21022.801" />
 	  <PackageReference Include="System.Drawing.Common" Version="6.0.0" />
 	  <PackageReference Include="System.IO.Packaging" Version="6.0.0" />

ClockifyReport/Function3.cs

         [Function("Function3")]
         public void Run([BlobTrigger("report-container/{name}", Connection = "AzureWebJobsStorage")] byte[] fileData, string name, ILogger log)
         {
-            string fileName = string.Format($"BlackRockReport_{DateTime.Now.ToString("f")}.xlsx");
+            string fileName = string.Format($"BlackRockReport_{DateTime.Now.ToString("f")}.xls");
 
             var client = new RestClient("https://api.mailgun.net/v3");
             client.Authenticator = new HttpBasicAuthenticator("api", MailGunApiKey);