12:16:51 Create new PHPExcel object
12:16:51 Set document properties
12:16:51 Add some data
12:16:51 Add comments
12:16:51 Add rich-text string
12:16:51 Merge cells
12:16:51 Protect cells
12:16:51 Set cell number formats
12:16:51 Set column widths
12:16:51 Set fonts
12:16:51 Set alignments
12:16:51 Set thin black border outline around column
12:16:51 Set thick brown border outline around Total
12:16:51 Set fills
12:16:51 Set style for header row using alternative method
12:16:51 Unprotect a cell
12:16:51 Add a hyperlink to an external website
12:16:51 Add a hyperlink to another cell on a different worksheet within the workbook
12:16:51 Add a drawing to the worksheet
12:16:51 Add a drawing to the worksheet
12:16:51 Add a drawing to the worksheet
12:16:51 Play around with inserting and removing rows and columns
12:16:51 Set header/footer
12:16:51 Set page orientation and size
12:16:51 Rename first worksheet
12:16:51 Create a second Worksheet object
12:16:51 Add some data
12:16:51 Set the worksheet tab color
12:16:51 Set alignments
12:16:51 Set column widths
12:16:51 Set fonts
12:16:51 Add a drawing to the worksheet
12:16:51 Set page orientation and size
12:16:51 Rename second worksheet
12:16:51 Write to CSV format

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Fatal error: Uncaught PHPExcel_Writer_Exception: Could not open file /var/www/html/hall-arrangement-api/vendor/phpoffice/phpexcel/Examples/16csv.csv for writing. in /var/www/html/hall-arrangement-api/vendor/phpoffice/phpexcel/Classes/PHPExcel/Writer/CSV.php:116 Stack trace: #0 /var/www/html/hall-arrangement-api/vendor/phpoffice/phpexcel/Examples/16csv.php(50): PHPExcel_Writer_CSV->save('/var/www/html/h...') #1 {main} thrown in /var/www/html/hall-arrangement-api/vendor/phpoffice/phpexcel/Classes/PHPExcel/Writer/CSV.php on line 116