Fix;

js/app.js

@@ -423,7 +423,7 @@ let game = new Vue({
                 this.currentQuest.corn + ' wood needed in quest',
                 this.resources.corn >= this.currentQuest.corn,
                 this.resources.coal + ' coal available',
-                this.currentQuest.coa + ' wood needed in quest',
+                this.currentQuest.coal + ' wood needed in quest',
                 this.resources.coal >= this.currentQuest.coal
             );