Google Apps script getFrom is undefined - google-apps-script

Question

Trying to get all unread emails and save the pdf attachments to google drive. When looping through the threads I get an error saying getFrom is undefined. It used to work but doesn't anymore it gets to the first unread email and spits out the error.
var fileTypesToExtract = ['pdf'];
//Name of the label which will be applied after processing the mail message
var labelName = 'SaveToDrive';
function GmailToDrive(){
//build query to search emails find if email doesnt have savetodrive label for duplicates
var query = '';
//GmailApp.getUserLabelByName('receipts-new')
//filename:jpg OR filename:tif OR filename:gif OR fileName:png OR filename:bmp OR filename:svg'; //'after:'+getDateNDaysBack_(1)+
for(var i in fileTypesToExtract){
query += (query === '' ?('filename:'+fileTypesToExtract[i]) : (' OR filename:'+fileTypesToExtract[i]));
}
query = 'is:unread ' + query;
var threads = GmailApp.search(query);
console.log(threads);
var label = getGmailLabel_(labelName);
var parentFolder;
var root = DriveApp.getRootFolder();
if(threads == null){
exit;
}
for(var i in threads){
var mesgs = threads[i].getMessages;
console.log(mesgs);
// console.log(threads[i]);
>! if(mesgs[i] == undefined){
>! console.log("Email Undefined");
>! continue;
>! }
var senderAddress = mesgs[i].getFrom();
var emailSubject = mesgs[i].getSubject();
console.log("Subject: "+emailSubject);
console.log("Sender Address: "+senderAddress);
folderPicker_(emailSubject, senderAddress);
if(threads.length > 0){
parentFolder = getFolder_(folderName);
}
//get attachments
var attachments = mesgs[i].getAttachments();
for(var k in attachments){
var attachment = attachments[k];
var isDefinedType = checkIfDefinedType_(attachment);
if(!isDefinedType) continue;
var attachmentBlob = attachment.copyBlob();
var file = DriveApp.createFile(attachmentBlob);
parentFolder.addFile(file);
root.removeFile(file);
}
threads[i].addLabel(label);
threads[i].markRead();
console.log("Sucessfull save to drive and label added");
}
}
Error
TypeError: Cannot read property 'getFrom' of undefined
GmailToDrive # Code.gs:40`