Parsing Error (6,2) Invalid table array key: what?

I have implemented the following TOML files using Hugo on Mac OS X

config.toml

baseURL = “http://example.org/
languageCode = “en-us”
title = “Bellarena Railway Station”
theme = “hugo-tranquilpeak-theme”

a relative link
links.md
36!
councils.md
46|690x194!
roe_valley.md
02|690x199!
sport.md
09|690x225

Yet I keep getting the following parsing error when entering hugo server -D

03

What seems to be the porblem?

A content file can only have one frontmatter type. You are mixing two: YAML (---) and TOML (+++).

Thanks.