How to solve the Error code :45 for the below mentioned script. Please provide the solution for the

Question

function fontcheck (){
    fonts=null;
//var fonts=document.fonts.everyItem().getElements();
var _docFonts = app.activeDocument.fonts.everyItem().getElements();
    var myDoc=app.activeDocument
    var fontlist = []
    for (var i = 0; i < _docFonts.length; i++) {
     var fontName = _docFonts[i].fullName;
     var fontpath= _docFonts[i].location;
var mm=String(fontpath);
var s=String.fromCharCode(92)
var ms=String("C:"+(s)+"Windows"+(s)+"Fonts"+(s));
mm=mm.substring(0,17);
if (mm==ms)
alert ("The Document contain System font Please fix the font using find font option");
exit()
mm=null;
fonts=null;
else
if (mm=="System Font")
alert ("The Document contain System font Please fix the font using find font option");
exit()
mm=null;
fonts=null;

Answer 1

works for me. Perhaps you can tell more about what happens?