Export feature is obsolete
This is probably a known issue, but it wasn't documented. So here it goes...
The Download button has stopped working because the PHPExcel, package on which this feature depends, has been superseded by PhpSpreadsheet, which is not backward-compatible.
While composer advises against using PhpExcel
, it looks like phpoffice/phpexcel
could be added back the composer.json
file and work alongside phpoffice/phpspreadsheet
. A better alternative would be to migrate the export2excel2007 method to phpspreadsheet
, perhaps using its migration tool.