Logging at level: debug Configuration file: /github/workspace/./_config.yaml GitHub Pages: github-pages v228 GitHub Pages: jekyll v3.9.3 Requiring: jekyll-redirect-from Requiring: jekyll-feed Requiring: jekyll-sitemap 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... EntryFilter: excluded /Gemfile.lock EntryFilter: excluded /Gemfile Reading: _posts/2019-12-14-example-post-2.md Reading: _posts/2020-07-02-example-post-3.md Reading: _posts/2019-01-07-example-post-1.md github-pages 228 | Error: (/github/workspace/_data/sources.yaml): did not find expected '-' indicator while parsing a block collection at line 1 column 1