09:12:28 Load from Gnumeric file
Call time to read Workbook was 0.1089 seconds
09:12:28 Current memory usage: 4 MB

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09:12:28 Write to Excel2007 format

Fatal error: Uncaught Error: Class 'ZipArchive' not found in /var/www/sigicov_sign/shared/PHPExcel/Classes/PHPExcel/Writer/Excel2007.php:225 Stack trace: #0 /var/www/sigicov_sign/shared/PHPExcel/Tests/GnumericReader.php(64): PHPExcel_Writer_Excel2007->save() #1 {main} thrown in /var/www/sigicov_sign/shared/PHPExcel/Classes/PHPExcel/Writer/Excel2007.php on line 225