fixes

app/Services/GenerateDocumentsService.php

@@ -361,6 +361,7 @@ class GenerateDocumentsService
             $sheet->setCellValue('E' . $i, $sku->product->certificate_number);
             $sheet->setCellValue('G' . $i, $sku->factory_number);
             $sheet->setCellValue('H' . $i, DateHelper::getHumanDate($sku->manufacture_date, true));
+            $sheet->setCellValue('J' . $i, $sku->product->service_life ?? 84);
         }
 
         // save file