21:12:46 Create new PHPExcel object
21:12:46 Set document properties
21:12:46 Add some data
21:12:46 Add comments
21:12:46 Add rich-text string
21:12:46 Merge cells
21:12:46 Protect cells
21:12:46 Set cell number formats
21:12:46 Set column widths
21:12:46 Set fonts
21:12:46 Set alignments
21:12:46 Set thin black border outline around column
21:12:46 Set thick brown border outline around Total
21:12:46 Set fills
21:12:46 Set style for header row using alternative method
21:12:46 Unprotect a cell
21:12:46 Add a hyperlink to an external website
21:12:46 Add a hyperlink to another cell on a different worksheet within the workbook
21:12:46 Add a drawing to the worksheet
21:12:46 Add a drawing to the worksheet
21:12:46 Add a drawing to the worksheet
21:12:46 Play around with inserting and removing rows and columns
21:12:46 Set header/footer
21:12:46 Set page orientation and size
21:12:46 Rename first worksheet
21:12:46 Create a second Worksheet object
21:12:46 Add some data
21:12:46 Set the worksheet tab color
21:12:46 Set alignments
21:12:46 Set column widths
21:12:46 Set fonts
21:12:46 Add a drawing to the worksheet
21:12:46 Set page orientation and size
21:12:46 Rename second worksheet
21:12:46 Write to HTML format

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