15:18:03 Enable Cell Caching using MemoryGZip method
15:18:03 Create new PHPExcel object
15:18:03 Set properties
15:18:03 Add data
15:18:03 Hide 'Phone' and 'fax' columns
15:18:03 Set outline levels
15:18:03 Freeze panes
15:18:03 Rows to repeat at top
15:18:05 Write to Excel2007 format

Fatal error: Uncaught Error: Class 'ZipArchive' not found in /var/www/html/academico/vendor/phpoffice/phpexcel/Classes/PHPExcel/Writer/Excel2007.php:227 Stack trace: #0 /var/www/html/academico/vendor/phpoffice/phpexcel/Examples/06largescale-with-cellcaching.php(113): PHPExcel_Writer_Excel2007->save('/var/www/html/a...') #1 {main} thrown in /var/www/html/academico/vendor/phpoffice/phpexcel/Classes/PHPExcel/Writer/Excel2007.php on line 227