google apps script message loop error on split -

i've got script works (i outputs expect) gives me cannot call method "split of undefined (line 16). if comment out line 16, error moves line 17 etc.

function emf() var ss = spreadsheetapp.openbyid('####').getsheetbyname('emf'); {   var label = gmailapp.getuserlabelbyname("tkh_emf");   var threads = label.getthreads();    (var i=0; i<threads.length; i++)   {     var messages = threads[i].getmessages();     (var j=0; j<messages.length; j++)     {       var fullname = messages[j].getplainbody().split("name*: ")[1].split("\n")[0]; // used gmap column title       var fname = fullname.split(" ")[0];       var lname = fullname.split(" ")[1];       var email = messages[j].getplainbody().split("email*: ")[1].split("\n")[0];       var phone = messages[j].getplainbody().split("phone*: ")[1].split("\n")[0];       var addr = messages[j].getplainbody().split("street address*: ")[1].split("\n")[0];       var city = messages[j].getplainbody().split("city*: ")[1].split("\n")[0];       var find = messages[j].getplainbody().split("hear us?*: ")[1].split("\n")[0];       var referrer = messages[j].getplainbody().split("referrer name: ")[1].split("\n")[0];       var photo = messages[j].getplainbody().split("(max size 2mb): ")[1].split("\n")[0];       var site = messages[j].getsubject().split("contact ")[1].split("from")[0];       var date = messages[j].getdate();       var work = messages[j].getplainbody().split("brief description of work requested*: ")[1].split("visitor ip: ")[0];       var ip = messages[j].getplainbody().split("visitor ip: ")[1].split("follow @emfteam")[0];        // var rownum = lastrow + 1;       ss.appendrow([fullname, fname, lname, date, work, photo, email, phone, addr, city, find, referrer, site, ip,'pending','pending']);           }       // threads[i].removelabel(label);   } } 

here's format of messages scraping ...

what missing? why giving me error?

you can skip messages cause error try , catch. here example

function emf() {   var ss = spreadsheetapp.openbyid('####').getsheetbyname('emf');   var label = gmailapp.getuserlabelbyname("tkh_emf");   var threads = label.getthreads();    (var i=0; i<threads.length; i++)   {     var messages = threads[i].getmessages();     (var j=0; j<messages.length; j++)     {       try {         var plainbody = messages[j].getplainbody();         var fullname = plainbody.split("name*: ")[1].split("\n")[0]; // used gmap column title         var fname = fullname.split(" ")[0];         var lname = fullname.split(" ")[1];         var email = plainbody.split("email*: ")[1].split("\n")[0];         var phone = plainbody.split("phone*: ")[1].split("\n")[0];         var addr = plainbody.split("street address*: ")[1].split("\n")[0];         var city = plainbody.split("city*: ")[1].split("\n")[0];         var find = plainbody.split("hear us?*: ")[1].split("\n")[0];         var referrer = plainbody.split("referrer name: ")[1].split("\n")[0];         var photo = plainbody.split("(max size 2mb): ")[1].split("\n")[0];         var site = messages[j].getsubject().split("contact ")[1].split("from")[0];         var date = messages[j].getdate();         var work = plainbody.split("brief description of work requested*: ")[1].split("visitor ip: ")[0];         var ip = plainbody.split("visitor ip: ")[1].split("follow @emfteam")[0];          ss.appendrow([fullname, fname, lname, date, work, photo, email, phone, addr, city, find, referrer, site, ip,'pending','pending']);             } catch(e) {       }     }   } }