16:41:08 Create new PHPExcel object
16:41:08 Set document properties
16:41:08 Add some data
16:41:08 Add comments
16:41:08 Add rich-text string
16:41:08 Merge cells
16:41:08 Protect cells
16:41:08 Set cell number formats
16:41:08 Set column widths
16:41:08 Set fonts
16:41:08 Set alignments
16:41:08 Set thin black border outline around column
16:41:08 Set thick brown border outline around Total
16:41:08 Set fills
16:41:08 Set style for header row using alternative method
16:41:08 Unprotect a cell
16:41:08 Add a hyperlink to an external website
16:41:08 Add a hyperlink to another cell on a different worksheet within the workbook
16:41:08 Add a drawing to the worksheet
16:41:08 Add a drawing to the worksheet
16:41:08 Add a drawing to the worksheet
16:41:08 Play around with inserting and removing rows and columns
16:41:08 Set header/footer
16:41:08 Set page orientation and size
16:41:08 Rename first worksheet
16:41:08 Create a second Worksheet object
16:41:08 Add some data
16:41:08 Set the worksheet tab color
16:41:08 Set alignments
16:41:08 Set column widths
16:41:08 Set fonts
16:41:08 Add a drawing to the worksheet
16:41:08 Set page orientation and size
16:41:08 Rename second worksheet
16:41:08 Write to CSV format

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Fatal error: Uncaught exception 'PHPExcel_Writer_Exception' with message 'Could not open file /var/www/html/oauth-api/vendor/phpoffice/phpexcel/Examples/16csv.csv for writing.' in /var/www/html/oauth-api/vendor/phpoffice/phpexcel/Classes/PHPExcel/Writer/CSV.php:113 Stack trace: #0 /var/www/html/oauth-api/vendor/phpoffice/phpexcel/Examples/16csv.php(51): PHPExcel_Writer_CSV->save('/var/www/html/o...') #1 {main} thrown in /var/www/html/oauth-api/vendor/phpoffice/phpexcel/Classes/PHPExcel/Writer/CSV.php on line 113