Need a help to resolve the excel sheet issue with PHPExcel . I'm trying to generate the PHPExcel version 1.8 from database. The problem is that excel sheet get creating and memory also get occupied but the content is not showing so it's showing blank excel sheet when my project in online but so it's showing excel sheet is proper when my project in offline my php version is 5.6

I see PHPExcel has been archived and unchanged for years. Looks like it's time to migrate.