# JSON file not recongised in Theme **URL:** \ **Category:** Product Support\ **Created:** [April 3, 2017, 10:21am UTC](https://forum.mautic.org/t/json-file-not-recongised-in-theme/8083 "2017-04-03T10:21:33Z")\ **Posts on this page:** 6\ **Page:** 1
**Author:** ![Theobane](https://avatars.discourse-cdn.com/v4/letter/t/f9ae1b/32.png) [@Theobane](https://forum.mautic.org/u/Theobane)\ **Post date:** [April 3, 2017, 10:21am UTC](https://forum.mautic.org/t/json-file-not-recongised-in-theme/8083/1 "2017-04-03T10:21:33Z")
Hey all, Just starting using Mautic today for the first time, really loving it so far!! Having a issue uploading a theme to Mautic, I have downloaded one of the themes and change some stuff around in the config.json file but when i tried to upload the zip file back up to Mautic, I get the following error. Quote: The theme you tried to install doesn't have the config.json file in the root folder. The theme could not be installed. Now I am not sure if it's to do with the way I am saving the file after i edit it, I edit the file in Notepad and then saved it as a .json file which it recongises it as a .json file but when I uploaded it. It won't work and I get the error shown above. I have tried using Notepad++ and still does not work, not sure what is causing this issue to be honest. Thanks all ---
**Author:** ![Theobane](https://avatars.discourse-cdn.com/v4/letter/t/f9ae1b/32.png) [@Theobane](https://forum.mautic.org/u/Theobane)\ **Post date:** [April 3, 2017, 10:21am UTC](https://forum.mautic.org/t/json-file-not-recongised-in-theme/8083/2 "2017-04-03T10:21:33Z")
Hey all, Just starting using Mautic today for the first time, really loving it so far!! Having a issue uploading a theme to Mautic, I have downloaded one of the themes and change some stuff around in the config.json file but when i tried to upload the zip file back up to Mautic, I get the following error. > [@](#): > > The theme you tried to install doesn’t have the config.json file in the root folder. The theme could not be installed. Now I am not sure if it’s to do with the way I am saving the file after i edit it, I edit the file in Notepad and then saved it as a .json file which it recongises it as a .json file but when I uploaded it. It won’t work and I get the error shown above. I have tried using Notepad++ and still does not work, not sure what is causing this issue to be honest. Thanks all ---
**Author:** ![Theobane](https://avatars.discourse-cdn.com/v4/letter/t/f9ae1b/32.png) [@Theobane](https://forum.mautic.org/u/Theobane)\ **Post date:** [April 3, 2017, 12:00pm UTC](https://forum.mautic.org/t/json-file-not-recongised-in-theme/8083/3 "2017-04-03T12:00:51Z")
Hi Dude, Fixed it there, Thanks a million. Another question though, it has to do with the css. I uploaded the css of a single page but would i need to upload a css for the base.html.twig or how does it work? Thanks for everything! ---
**Author:** ![Theobane](https://avatars.discourse-cdn.com/v4/letter/t/f9ae1b/32.png) [@Theobane](https://forum.mautic.org/u/Theobane)\ **Post date:** [April 3, 2017, 2:18pm UTC](https://forum.mautic.org/t/json-file-not-recongised-in-theme/8083/4 "2017-04-03T14:18:22Z")
Perfect, Got everything up and running. Thank you for the great support!! Also, quick question. Does javascript work on Mautic? Going to have a slider on one of the pages and was wondering if it works with it? ---
**Author:** ![thecodeine](https://avatars.discourse-cdn.com/v4/letter/t/e47c2d/32.png) [@thecodeine](https://forum.mautic.org/u/thecodeine)\ **Post date:** [April 4, 2017, 6:47am UTC](https://forum.mautic.org/t/json-file-not-recongised-in-theme/8083/5 "2017-04-04T06:47:26Z")
@Theobane You can use javascript as on any other webpage 😉 ---
**Author:** ![Theobane](https://avatars.discourse-cdn.com/v4/letter/t/f9ae1b/32.png) [@Theobane](https://forum.mautic.org/u/Theobane)\ **Post date:** [April 5, 2017, 7:15am UTC](https://forum.mautic.org/t/json-file-not-recongised-in-theme/8083/6 "2017-04-05T07:15:53Z")
Thanks guys!!