PostCSS: Exec Format Error (ENOEXEC)

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I am trying to use tailwind in my Jekyll project but the postcss plugin throws a conversion error.
Below are the logs while running Jekyll serve:

```
Conversion error: Jekyll::Converters::PostCss encountered an error while converting 'assets/css/main.scss':
Exec format error - C:/Ruby25-x64/lib/ruby/gems/2.5.0/gems/jekyll-postcss-0.4.0/bin/postcss '{"raw_content":"@import \"tailwindcss/base\";\n@import \"tailwindcss/components\";\n@import \"tailwindcss/utilities\";\n\n\n"}'
Traceback (most recent call last):
29: from C:/Ruby25-x64/bin/jekyll:23:in `'
28: from C:/Ruby25-x64/bin/jekyll:23:in `load'
27: from C:/Ruby25-x64/lib/ruby/gems/2.5.0/gems/jekyll-4.2.0/exe/jekyll:15:in `'
26: from C:/Ruby25-x64/lib/ruby/gems/2.5.0/gems/mercenary-0.4.0/lib/mercenary.rb:21:in `program'
25: from C:/Ruby25-x64/lib/ruby/gems/2.5.0/gems/mercenary-0.4.0/lib/mercenary/program.rb:44:in `go'
24: from C:/Ruby25-x64/lib/ruby/gems/2.5.0/gems/mercenary-0.4.0/lib/mercenary/command.rb:221:in `execute'
23: from C:/Ruby25-x64/lib/ruby/gems/2.5.0/gems/mercenary-0.4.0/lib/mercenary/command.rb:221:in `each'
22: from C:/Ruby25-x64/lib/ruby/gems/2.5.0/gems/mercenary-0.4.0/lib/mercenary/command.rb:221:in `block in execute'
21: from C:/Ruby25-x64/lib/ruby/gems/2.5.0/gems/jekyll-4.2.0/lib/jekyll/commands/serve.rb:86:in `block (2 levels) in init_with_program'
20: from C:/Ruby25-x64/lib/ruby/gems/2.5.0/gems/jekyll-4.2.0/lib/jekyll/command.rb:91:in `process_with_graceful_fail'
19: from C:/Ruby25-x64/lib/ruby/gems/2.5.0/gems/jekyll-4.2.0/lib/jekyll/command.rb:91:in `each'
18: from C:/Ruby25-x64/lib/ruby/gems/2.5.0/gems/jekyll-4.2.0/lib/jekyll/command.rb:91:in `block in process_with_graceful_fail'
17: from C:/Ruby25-x64/lib/ruby/gems/2.5.0/gems/jekyll-4.2.0/lib/jekyll/commands/build.rb:36:in `process'
16: from C:/Ruby25-x64/lib/ruby/gems/2.5.0/gems/jekyll-4.2.0/lib/jekyll/commands/build.rb:65:in `build'
15: from C:/Ruby25-x64/lib/ruby/gems/2.5.0/gems/jekyll-4.2.0/lib/jekyll/command.rb:28:in `process_site'
14: from C:/Ruby25-x64/lib/ruby/gems/2.5.0/gems/jekyll-4.2.0/lib/jekyll/site.rb:80:in `process'
13: from C:/Ruby25-x64/lib/ruby/gems/2.5.0/gems/jekyll-4.2.0/lib/jekyll/site.rb:211:in `render'
12: from C:/Ruby25-x64/lib/ruby/gems/2.5.0/gems/jekyll-4.2.0/lib/jekyll/site.rb:538:in `render_pages'
11: from C:/Ruby25-x64/lib/ruby/gems/2.5.0/gems/jekyll-4.2.0/lib/jekyll/site.rb:538:in `each'
10: from C:/Ruby25-x64/lib/ruby/gems/2.5.0/gems/jekyll-4.2.0/lib/jekyll/site.rb:539:in `block in render_pages'
9: from C:/Ruby25-x64/lib/ruby/gems/2.5.0/gems/jekyll-4.2.0/lib/jekyll/site.rb:547:in `render_regenerated'
8: from C:/Ruby25-x64/lib/ruby/gems/2.5.0/gems/jekyll-4.2.0/lib/jekyll/renderer.rb:63:in `run'
7: from C:/Ruby25-x64/lib/ruby/gems/2.5.0/gems/jekyll-4.2.0/lib/jekyll/renderer.rb:84:in `render_document'
6: from C:/Ruby25-x64/lib/ruby/gems/2.5.0/gems/jekyll-4.2.0/lib/jekyll/renderer.rb:104:in `convert'
5: from C:/Ruby25-x64/lib/ruby/gems/2.5.0/gems/jekyll-4.2.0/lib/jekyll/renderer.rb:104:in `reduce'
4: from C:/Ruby25-x64/lib/ruby/gems/2.5.0/gems/jekyll-4.2.0/lib/jekyll/renderer.rb:104:in `each'
3: from C:/Ruby25-x64/lib/ruby/gems/2.5.0/gems/jekyll-4.2.0/lib/jekyll/renderer.rb:106:in `block in convert'
2: from C:/Ruby25-x64/lib/ruby/gems/2.5.0/gems/jekyll-postcss-0.4.0/lib/jekyll/converters/postcss.rb:39:in `convert'
1: from C:/Ruby25-x64/lib/ruby/gems/2.5.0/gems/jekyll-postcss-0.4.0/lib/jekyll-postcss/socket.rb:20:in `write'
C:/Ruby25-x64/lib/ruby/gems/2.5.0/gems/jekyll-postcss-0.4.0/lib/jekyll-postcss/socket.rb:20:in ``': Exec format error - C:/Ruby25-x64/lib/ruby/gems/2.5.0/gems/jekyll-postcss-0.4.0/bin/postcss '{"raw_content":"@import \"tailwindcss/base\";\n@import \"tailwindcss/components\";\n@import \"tailwindcss/utilities\";\n\n\n"}' (Errno::ENOEXEC)
```

Even with the only front matter in the scss file, it throws the same error.
### main.scss file

```
---
---
@import "tailwindcss/base";
@import "tailwindcss/components";
@import "tailwindcss/utilities";
```

Start with lib/jekyll-postcss/socket.rb and lib/jekyll/converters/postcss.rb, then inspect the bin/postcss entry point referenced by the Windows traceback. Reproduce the failure with the shown main.scss and Jekyll serve setup. Done means the Tailwind/PostCSS conversion runs successfully on Windows without the ENOEXEC error.

Written by the indexing model from the issue text.