13:42:45 Create new PHPExcel object
13:42:45 Set document properties
13:42:45 Add some data
13:42:45 Add comments
13:42:45 Add rich-text string
13:42:45 Merge cells
13:42:45 Protect cells
13:42:45 Set cell number formats
13:42:45 Set column widths
13:42:45 Set fonts
13:42:45 Set alignments
13:42:45 Set thin black border outline around column
13:42:45 Set thick brown border outline around Total
13:42:45 Set fills
13:42:45 Set style for header row using alternative method
13:42:45 Unprotect a cell
13:42:45 Add a hyperlink to an external website
13:42:45 Add a hyperlink to another cell on a different worksheet within the workbook
13:42:45 Add a drawing to the worksheet
13:42:45 Add a drawing to the worksheet
13:42:45 Add a drawing to the worksheet
13:42:45 Play around with inserting and removing rows and columns
13:42:45 Set header/footer
13:42:45 Set page orientation and size
13:42:45 Rename first worksheet
13:42:45 Create a second Worksheet object
13:42:45 Add some data
13:42:45 Set the worksheet tab color
13:42:45 Set alignments
13:42:45 Set column widths
13:42:45 Set fonts
13:42:45 Add a drawing to the worksheet
13:42:45 Set page orientation and size
13:42:45 Rename second worksheet
13:42:45 Write to HTML format

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Fatal error: Uncaught exception 'PHPExcel_Writer_Exception' with message 'Could not open file /var/www/ECHANGE/sf2_echange_ebillet/vendor/phpoffice/phpexcel/Examples/17html.htm for writing.' in /var/www/ECHANGE/sf2_echange_ebillet/vendor/phpoffice/phpexcel/Classes/PHPExcel/Writer/HTML.php:166 Stack trace: #0 /var/www/ECHANGE/sf2_echange_ebillet/vendor/phpoffice/phpexcel/Examples/17html.php(50): PHPExcel_Writer_HTML->save('/var/www/ECHANG...') #1 {main} thrown in /var/www/ECHANGE/sf2_echange_ebillet/vendor/phpoffice/phpexcel/Classes/PHPExcel/Writer/HTML.php on line 166