diff --git a/src/gamecore/AnyTask.vue b/src/gamecore/AnyTask.vue
index 756507d..c10d9ca 100644
--- a/src/gamecore/AnyTask.vue
+++ b/src/gamecore/AnyTask.vue
@@ -4,7 +4,7 @@
   import { taskTypeToComponentName, } from '@/common/common';
 
   const props = defineProps<{node:GamecoreTask, withComponentName?:string}>()
-  const taskName = props.withComponentName ?? taskTypeToComponentName(props.node.$type)
+  const taskName = props.withComponentName ?? taskTypeToComponentName(props.node?.$type ?? 'MissingTask')
   const taskComponent = defineAsyncComponent({
     loader: async () => 
     {
@@ -25,7 +25,7 @@
 </script>
 
 <template>
-  <component :is="taskComponent" :node="node" :class="inversibleNode.Inverse || inversibleNode.InverseResultFlag ? 'inverted' : ''" />
+  <component :is="taskComponent" :node="node" :class="inversibleNode?.Inverse || inversibleNode?.InverseResultFlag ? 'inverted' : ''" />
 </template>
 
 <style scoped>
diff --git a/src/gamecore/MissingTask.vue b/src/gamecore/MissingTask.vue
index bf555d3..9c4aa26 100644
--- a/src/gamecore/MissingTask.vue
+++ b/src/gamecore/MissingTask.vue
@@ -8,7 +8,7 @@
 
 <template>
   <BlockLayout :source="node">
-    <span class="notimplemented">{{ cleanupTaskName(node.$type) }}</span>
+    <span class="notimplemented">{{ cleanupTaskName(node?.$type ?? "No Task") }}</span>
   </BlockLayout>
 </template>
 
diff --git a/src/sources/characterai.ts b/src/sources/characterai.ts
index 69ef47f..1bdc27c 100644
--- a/src/sources/characterai.ts
+++ b/src/sources/characterai.ts
@@ -15,7 +15,7 @@ export interface AIDecision
     DecisionName:string
     ScoreEvaluatorType:string
     ConsiderAxisList:GamecoreTask[]
-    RootTask:GamecoreTask
+    RootTask?:GamecoreTask
 }
 
 export interface CharacterAI
diff --git a/src/views/aside/MonsterAI.vue b/src/views/aside/MonsterAI.vue
index 61de418..89cbaed 100644
--- a/src/views/aside/MonsterAI.vue
+++ b/src/views/aside/MonsterAI.vue
@@ -85,7 +85,7 @@
           <div v-for="axis in decision.ConsiderAxisList">
             <AnyTask :node="axis" />
           </div>
-          <AnyTask :node="decision.RootTask" />
+          <AnyTask v-if="decision.RootTask != undefined" :node="decision.RootTask" />
         </div>
 
         <template v-if="skillSequence.length > 0">