Cannot export files on IIS Server

[thuxeko]

Hello.

I used Exceljs to read a file and then put the data in and pack it back to the user. My code is as follows:

this.http.get('assets/Temp/demo.xlsx', { responseType: 'arraybuffer' })
.subscribe(data => {
var workbook = new Workbook();
console.log('1');
workbook.xlsx.load(data)
.then(function () {
console.log('2');
var worksheet = workbook.getWorksheet("Demo");
worksheet.addRows(lstData);
workbook.xlsx.writeBuffer().then(buff => {
console.log('3');
});
});
});

When I build the application on my computer, the code runs normally and returns the message in turn: 1-2-3. But when I put the build application on the IIS Server, only the message will appear: 1. There are no error messages displayed on the console screen. I don't know if I did something wrong. I hope everyone will help me. Thanks

[carolharry]

This post suggest to downgrade exceljs version to 1.10.0 #871