const blob = new Blob([res]);
        let fileName = item.attachmentName;
        let fileUrl = item.attachmentUrl;
        const extName = fileUrl.substring(
            fileUrl.lastIndexOf('.')
        )
        fileName = fileName + extName;
        const link = document.createElement('a');
        link.download = fileName;
        link.target = '_blank';
        link.style.display = 'none';
        link.href = URL.createObjectURL(blob);
        document.body.appendChild(link);
        link.click();
        URL.revokeObjectURL(link.href);
        document.body.removeChild(link);