I purchased the learnplus theme from themeforest and tried to build it. However while building i am constantly getting this error:
Error: Undefined variable: "$sidebar-spacing-horizontal".
on line 3 of node_modules/adminplus/src/sass/sidebar-components/_card.scss
>> margin-bottom: $sidebar-spacing-horizontal;
I am not familiar with that theme, but whenever you see some variable declarations of the theme, you can make something like this -
$sidebar-spacing-horizontal: 20px;. After that you can try to compile again.