Logging at level: debug Configuration file: /github/workspace/./_config.yml Theme: jekyll-theme-slate Theme source: /usr/local/bundle/gems/jekyll-theme-slate-0.2.0 GitHub Pages: github-pages v228 GitHub Pages: jekyll v3.9.3 Theme: jekyll-theme-slate Theme source: /usr/local/bundle/gems/jekyll-theme-slate-0.2.0 Requiring: jekyll-seo-tag Requiring: jekyll-coffeescript Requiring: jekyll-commonmark-ghpages Requiring: jekyll-gist Requiring: jekyll-github-metadata Requiring: jekyll-paginate Requiring: jekyll-relative-links Requiring: jekyll-optional-front-matter Requiring: jekyll-readme-index Requiring: jekyll-default-layout Requiring: jekyll-titles-from-headings GitHub Metadata: Initializing... Source: /github/workspace/. Destination: /github/workspace/./_site Incremental build: disabled. Enable with --incremental Generating... github-pages 228 | Error: Invalid byte sequence in UTF-8 in line 11.