error in Jekyll while building GitHub pages, I am not using any Sass

Configuration file: none
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  Logging at level: debug
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      GitHub Pages: github-pages v226
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      GitHub Pages: jekyll v3.9.2
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             Theme: jekyll-theme-primer
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      Theme source: /usr/local/bundle/gems/jekyll-theme-primer-0.6.0
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         Requiring: jekyll-github-metadata
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  Conversion error: Jekyll::Converters::Scss encountered an error while converting 'assets/css/style.scss':
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                    No such file or directory @ dir_chdir - /github/workspace/docs
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/usr/local/bundle/gems/jekyll-sass-converter-1.5.2/lib/jekyll/converters/scss.rb:86:in `chdir': No such file or directory @ dir_chdir - /github/workspace/docs (Errno::ENOENT)