编译 SASS 时出现预期换行错误

我遇到的问题是我的 SASS 无法编译并且它向我显示相同的错误： Expected NewLine

#topper, h3 {    
    text-align: center;
    text-decoration:underline;
}

.list-group{
    .active{
        text-decoration: underline;
        font-weight:bold
    }
}

显示错误。尝试了一切，甚至删除并将左大括号放在新行中

  ╷
1 │ #topper, h3 {
  │             ^
  ╵
  home.sass 1:13  root stylesheet

根据Sass-lang.com https://sass-lang.com/documentation/syntax以及 @Nit 的评论，您选择了错误的编译选项。

这是SCSS

@mixin button-base() {
  @include typography(button);
  @include ripple-surface;
  @include ripple-radius-bounded;

  display: inline-flex;
  position: relative;
  height: $button-height;
  border: none;
  vertical-align: middle;

  &:hover { cursor: pointer; }

  &:disabled {
    color: $mdc-button-disabled-ink-color;
    cursor: default;
    pointer-events: none;
  }
}

在 SASS 中也一样

@mixin button-base()
  @include typography(button)
  @include ripple-surface
  @include ripple-radius-bounded

  display: inline-flex
  position: relative
  height: $button-height
  border: none
  vertical-align: middle

  &:hover
    cursor: pointer

  &:disabled
    color: $mdc-button-disabled-ink-color
    cursor: default
    pointer-events: none