Save As Window Not Opening in Production Angular

I am using filesaver for my Angular application. In development mode everything works file but in production , its not working and its not giving any errors. The save as window is not opening.
```
workbook.xlsx.writeBuffer().then((data) => {
let blob = new Blob([data], { type: 'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet' });
fs.saveAs(blob, title + '.xlsx');
})
```

My hosted application is not https. Would that be a problem? . I have allowed all access to the hosted url.