Designtemplate

Hi,

I'm currently trying to create my own templateu using GitHub - MattRudy/PowerBI-ThemeTemplates: JSON Templates for assembling Power BI Themes. 

I have started with something I found online with just slicer and barchart. This works with no issues, however when I try to add area chart it failed. I've tried several changes, but don't understand why it failed... 

Would be great if someone can help me with this and hopefully make me understand why, which means I can keep going on my own.

json file can be found using this page:

https://filetransfer.io/data-package/U7x6UV1Z#link

Thanks!