Error conversion percentage SCSS

[vsudbrack]

Hello,

I keep having this conversion error on Github pages steaming from bootstrap/_grid.scss, I suppose.

  Conversion error: Jekyll::Converters::Scss encountered an error while converting 'assets/css/main.scss':
                    $number: "calc($size / $columns)" is not a unitless number for `percentage' on line 41

The weird thing is that this error is only on Github pages, locally I can bundle exec the page and it works normally.