error when preview

[youngrichu]

I'm using the latest Adapt authoring tool when i hit preview i get the below error :

Command failed: grunt server-build:prod --outputdir=courses\60fea49cb40f4d62785a366d\61029fde14733e4aec14ded3\build --theme=60fea584b40f4d62785a3688 --menu=adapt-contrib-boxMenu
NameError: variable @primary-color is undefined in src/components/adapt-stacklist/less/stacklist.less on line 10, column 20:
9 	margin-bottom: @item-margin;
10 	background-color: @primary-color;
11 	color: @primary-color-inverted;


Fatal error: NameError: variable @primary-color is undefined in src/components/adapt-stacklist/less/stacklist.less on line 10, column 20:
9 	margin-bottom: @item-margin;
10 	background-color: @primary-color;
11 	color: @primary-color-inverted;
�

[danbuntu]

We've just hit this issue. The solution in to replace line 10 and 11 in plugins/content/component/versions/adapt-stacklist/4.0.0/adapt-stacklist/less/stacklist.less with:

    background-color: @item-color;
    color: @item-color-inverted;

Patch file below:

--- a/less/stacklist.less     2026-07-14 09:09:38.892573608 +0000
+++ b/less/stacklist.less     2026-07-14 09:09:17.712892339 +0000
@@ -7,8 +7,8 @@
      position: relative;
      padding: 20px;
      margin-bottom: @item-margin;
-     background-color: @primary-color;
-     color: @primary-color-inverted;
+     background-color: @item-color;
+     color: @item-color-inverted;

     &.show {
         position: static !important;