10:52:05 Create new PHPExcel object
10:52:05 Set document properties
10:52:05 Add some data
10:52:05 Add comments
10:52:05 Add rich-text string
10:52:05 Merge cells
10:52:05 Protect cells
10:52:05 Set cell number formats
10:52:05 Set column widths
10:52:05 Set fonts
10:52:05 Set alignments
10:52:05 Set thin black border outline around column
10:52:06 Set thick brown border outline around Total
10:52:06 Set fills
10:52:06 Set style for header row using alternative method
10:52:06 Unprotect a cell
10:52:06 Add a hyperlink to an external website
10:52:06 Add a hyperlink to another cell on a different worksheet within the workbook
10:52:06 Add a drawing to the worksheet
10:52:06 Add a drawing to the worksheet
10:52:06 Add a drawing to the worksheet
10:52:06 Play around with inserting and removing rows and columns
10:52:06 Set header/footer
10:52:06 Set page orientation and size
10:52:06 Rename first worksheet
10:52:06 Create a second Worksheet object
10:52:06 Add some data
10:52:06 Set the worksheet tab color
10:52:06 Set alignments
10:52:06 Set column widths
10:52:06 Set fonts
10:52:06 Add a drawing to the worksheet
10:52:06 Set page orientation and size
10:52:06 Rename second worksheet
10:52:06 Write to CSV format

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