not compatible with latest game version

Dev environment for hookui-framework fails with a strange new error:

```
Uncaught (in promise) Error: 'app.ready.update' was not called after subscribe!
Did you forget to add the binding on the C# side?
    connect http://localhost:8000/index.js:1
    subscribe http://localhost:8000/index.js:1
    <anonymous> http://localhost:8000/index.js:1
```
