Hello, i figure this was safer than stackoverflow because i feel like my question is really really dumb and beginner-level. I am trying to rebuild a company's current website using gatsbyjs and i started building on top of one of the gatsby starters. I hit a roadblock when i tried to add new pages in the src directory. My gatsby server crashed and i got this error in the browser:

There was an error in your GraphQL query:  

Expected type MarkdownRemarkFieldsEnum, found frontmatter___tags. Did you mean the enum value frontmatter___title, frontmatter___heading, frontmatter___subtitle, frontmatter___meta_title, or frontmatter___templateKey?  

File: C:/Users/user/Desktop/rubiks-website-gatsby/src/pages/tags/index.js 

I've spent the last three days trying to figure this out. Please help