Maybe I'm wrong in my imports, but after the merge of https://github.com/twbs/bootstrap/commit/9f099d3e4f6fe5b0c5454d2462cc22d06b6f4a1b, some bootstrap/scss/maps
imports seem to be missing and to create errors:
Error: Undefined variable.
╷
358 │ values: $negative-spacers
│ ^^^^^^^^^^^^^^^^^
╵
bootstrap/scss/_utilities.scss 358:15 @import
scss/custom.scss 36:9 root stylesheet
or
Error: Undefined variable.
╷
20 │ @each $color, $value in $theme-colors-rgb {
│ ^^^^^^^^^^^^^^^^^
╵
bootstrap/scss/_root.scss 20:27 @import
scss/custom.scss 35:9 root stylesheet