Fix assignment console bug

client/src/components/content-blocks/assignment/Assignment.vue

@@ -1,6 +1,6 @@
 <template>
   <div class="assignment">
-    <h3 class="assignment__title" :id="assignment.id.replace(/=/g, '')">{{assignment.title}}</h3>
+    <h3 class="assignment__title" :id="id">{{assignment.title}}</h3>
     <p class="assignment__assignment-text">
       {{assignment.assignment}}
     </p>
@@ -107,6 +107,9 @@
         return {
           text: this.assignment.solution
         }
+      },
+      id() {
+        return this.assignment.id ? this.assignment.id.replace(/=/g, '') : ''
       }
     },