:bug: catching edge case for undefined hero object

vue-theme/src/store/index.js

@@ -30,6 +30,8 @@ const state = {
 
 const mutations = {
   SET_HERO(state, hero) {
+    if(!hero) return
+    
     if (hero.url) {
       state.hero.text = state.hero.url = hero.url
     } else {