解决采购订单导入失败，提示语错误 bug

be/Modules/Shared/src/Win_in.Sfs.Shared.Application/ExportAndImport/ClosedXmlExportImportService.cs

@@ -333,7 +333,7 @@ public class ClosedXmlExportImportService : IExportImportService
             else
             {
                 SetCellStyle(row.Cell(1).SetValue("失败"), rowIndex, 1, fontColor: XLColor.Red);
-                var desc = string.Join("\n", errors.Select(o => $"{o.MemberNames?.First()} {o.ErrorMessage}"));
+                string desc = string.Join("\n", errors.Select(o => $"{(o.MemberNames.Any() ? o.MemberNames.First() : String.Empty)} {o.ErrorMessage}"));
                 SetCellStyle(row.Cell(2).SetValue(desc), rowIndex, 2, fontColor: XLColor.Red);
             }
         }