変数設定を追加

frontend/src/components/right/PropertyPanel.vue

@@ -13,7 +13,7 @@
        >
         <q-card class="column full-height" style="width: 300px">
          <q-card-section>
-           <div class="text-h6">{{ actionNode.subTitle }}：設定</div>
+           <div class="text-h6">{{ actionNode?.subTitle }}：設定</div>
          </q-card-section>
          <q-card-section class="col q-pt-none">
            <property-list :node-props="actionProps" v-if="showPanel" ></property-list>
@@ -51,10 +51,10 @@ import { IActionNode } from 'src/types/ActionTypes';
   ],
   setup(props,{emit}) {
     const showPanel =ref(props.drawerRight);
-    const actionProps =ref(props.actionNode.actionProps);
+    const actionProps =ref(props.actionNode?.actionProps);
     watchEffect(() => {
       showPanel.value = props.drawerRight;
-      actionProps.value= props.actionNode.actionProps;
+      actionProps.value= props.actionNode?.actionProps;
     });
 
     const cancel = async() =>{