Read File/Download File Button in VBCS Page

Summary:

I have to make a download file button in my VBCS page. I wrote one integration which brings the binary content of the file in the response body. But when I call this integration/endpoint in VBCS so it doesn't bring the same response. Am I doing it wrong?

Content (required):

This is sample response in OIC:

Endpoint response in VBCS ;

I am using this action to get the file and javascript to make it a download link;

JS function mapping;

JS Function:

 PageModule.prototype.downloadFile = function (data, mimeType, filename) {

    const blob = new Blob([data], {

    type: mimeType

    });

    // IE/Edge