# Error: webpackJsonp is not defined **URL:** \ **Category:** ionic-v3\ **Created:** [May 15, 2018, 2:00am UTC](https://forum.ionicframework.com/t/error-webpackjsonp-is-not-defined/130515 "2018-05-15T02:00:37Z")\ **Posts on this page:** 2\ **Page:** 1
**Author:** ![gking4](https://avatars.discourse-cdn.com/v4/letter/g/da6949/32.png) [@gking4](https://forum.ionicframework.com/u/gking4)\ **Post date:** [May 15, 2018, 2:00am UTC](https://forum.ionicframework.com/t/error-webpackjsonp-is-not-defined/130515/1 "2018-05-15T02:00:37Z")
Hello, I keep running into this error and the console is reading ![aa6e49b4781c1d83de21d8de441621d1](https://global.discourse-cdn.com/ionicframework/original/3X/c/0/c0249098b60416e3c541023201cd25a45fa01ff5.png) my index.html reads as ```auto Ionic App ``` from what I read the issue seems to be with not having vendor.js added here but that fix is not working as you can see I have it in my index.html. Any help would be greatly appreciated. EDIT: Im not sure what caused it or why but in the www folder the whole build folder got deleted so I pulled a copy from an older version I had saved, so anyone that comes across this try checking for that, the main.css specifically was missing. ---
**Author:** ![mhartington](https://sea1.discourse-cdn.com/ionicframework/user_avatar/forum.ionicframework.com/mhartington/32/137757_2.png) [@mhartington](https://forum.ionicframework.com/u/mhartington)\ **Post date:** [July 19, 2021, 9:35pm UTC](https://forum.ionicframework.com/t/error-webpackjsonp-is-not-defined/130515/2 "2021-07-19T21:35:32Z")