make install

make develop

For the case you're facing the issue, that bootstrap is throwing the error about art-sass peprectation. Please user the following workaround. The file is located in {your_project_folder/node_modules/bootstrap/scss/mixins/_grid.scss}.

@mixin row-cols($count) {
  > * {
    flex: 0 0 auto;
    width: divide(100%, $count);
    width: percentage(divide(1, $count));
  }
}