Errno::ENOENT: No such file or directory @ rb_sysopen - estilos.scss

Sinceramente não sei sequer descrever que erro foi esse, mas o resultado no .css foi o seguinte:

/*
Errno::ENOENT: No such file or directory @ rb_sysopen - estilos.scss

Backtrace:
C:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/sass-3.7.4/lib/sass/plugin/compiler.rb:454:in `read'
C:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/sass-3.7.4/lib/sass/plugin/compiler.rb:454:in `update_stylesheet'
C:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/sass-3.7.4/lib/sass/plugin/compiler.rb:215:in `block in update_stylesheets'
C:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/sass-3.7.4/lib/sass/plugin/compiler.rb:209:in `each'
C:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/sass-3.7.4/lib/sass/plugin/compiler.rb:209:in `update_stylesheets'
C:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/sass-3.7.4/lib/sass/plugin/compiler.rb:294:in `watch'
C:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/sass-3.7.4/lib/sass/plugin.rb:109:in `method_missing'
C:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/sass-3.7.4/lib/sass/exec/sass_scss.rb:358:in `watch_or_update'
C:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/sass-3.7.4/lib/sass/exec/sass_scss.rb:51:in `process_result'
C:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/sass-3.7.4/lib/sass/exec/base.rb:50:in `parse'
C:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/sass-3.7.4/lib/sass/exec/base.rb:18:in `parse!'
C:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/sass-3.7.4/bin/sass:13:in `<top (required)>'
C:/Ruby27-x64/bin/sass:23:in `load'
C:/Ruby27-x64/bin/sass:23:in `<main>'
*/
body:before {
  white-space: pre;
  font-family: monospace;
  content: "Errno::ENOENT: No such file or directory @ rb_sysopen - estilos.scss"; }

O que pode ter acontecido e como devo resolver? Desde já obrigado!