Meteor-Files: Failed to load PDF document from AWS

I’m having an issue:

I am using PDFKit(A JavaScript PDF generation library for Node and the browser)

PDF document created successfully and also upload on AWS successfully but when i am trying to opne the document the document not loading and showing message “Failed to load document”.

My Code is:

let details = Async.runSync(function (done) {
			doc = new PDFDocument({size: 'A4', margin: 50});
			doc.info.Title = 'Study Report';
			doc.info.Author = '';
			      doc.fontSize(18);   
	        doc.font('Times-Roman')
	        .text(title,{align: 'center',height:100}).moveDown(1.0);
	        doc.fontSize(12);
	        doc.text(content,{align: 'justify'}).moveDown(2.0);
                doc.fontSize(12);
	        doc.text(signature,{align: 'right'});
	        //doc.text('PDFKit is simple', 10, 30, {align: 'justify', width: 200});
	        let path = process.env["PWD"] +`/.meteor/local/files/report-${title}.pdf`;
		doc.pipe(fs.createWriteStream(path));
			done(null, path);
			doc.end();
		});

		
		if(details.result){
			otps = {
		  		fileName: `${title}`,
		  		type: 'application/pdf',
			}
	
			Files.addFile(details.result, otps,function(error, fileRef) {
				  	if(!error){
				  	
						//Meteor.users.update({_id:userId},{$set:{'paymentDetails.invoicePathId':fileRef._id}});
						Meteor.call('manageStudyReport',fileRef._id,studyInstanceUid,function(error,response){
							if(error) {
								console.log('Error',error);
							}
						});
				  	}
				  	//return true;
				}, true);
		}