Add semi-colon

web/sass-files/sass/partials/_command-box.scss

@@ -5,7 +5,7 @@
     border: $border-gray;
     bottom: 38px;
     overflow: auto;
-    z-index: 100
+    z-index: 100;
     @extend %popover-box-shadow;
     .sidebar--right & {
         bottom: 100px;