Syntax error in tag 'highlight' when building via Github pages (remote theme)

[rdewdrops]

Hi,

I am running into the following error when building the site via Github pages:
Liquid Exception: Syntax Error in tag 'highlight' while parsing the following markup: Valid syntax: highlight <lang> [linenos] in CHANGELOG.md

I have the following changes made to my _config.yml and Gemfile respectively, as mentioned in the docs:

Config.yml
remote_theme: "mmistakes/so-simple-theme"

Gemfile

source "https://rubygems.org"
gem "github-pages", group: :jekyll_plugins
gem "tzinfo-data"
gem "wdm", "~> 0.1.0" if Gem.win_platform?

[mmistakes]

The error above tells you what file Jekyll is having problems (a reference to {% highlight %} tag in CHANGELOG.md.

Looks like you didn't remove some unnecessary files used only in the maintenance of the theme. Purge those from your repo and you should be good to go.