16:42:35 Create new PHPExcel object
16:42:35 Set document properties
16:42:35 Add some data
16:42:35 Define named ranges
16:42:35 Rename named ranges
16:42:35 Rename worksheet
16:42:35 Create new Worksheet object
16:42:35 Add some data
16:42:35 Resolve range
Cell B1 {=PersonFN}: Maarten
Cell B3 {=PersonFN & " " & PersonLN}: Maarten Balliauw
Cell Person!B1:
Fatal error: Call to a member function getCell() on null in /home/factovizjh/dataviz/vendor/phpoffice/phpexcel/Classes/PHPExcel/Worksheet.php on line 1164