Uncaught TypeError: Cannot read properties of null (reading 'on')

引擎 3.5 版本

canvas.ts:201 Uncaught TypeError: Cannot read properties of null (reading ‘on’)
at Canvas.onEnable (canvas.ts:201:40)
at OneOffInvoker.invokeOnEnable [as _invoke] (component-scheduler.ts:318:18)
at OneOffInvoker.invoke (component-scheduler.ts:154:18)
at NodeActivator.activateNode (node-activator.ts:192:27)
at Scene._activate (scene.ts:301:42)
at Director.runSceneImmediate (director.ts:401:15)
at director.ts:437:18
at Director.emit (callbacks-invoker.ts:348:25)
at Director.tick (director.ts:726:18)
at callback (game.ts:817:26)

求解决

节点是不是提前销毁了?

没有,3.0引擎升级上来遇到的问题

请问解决了吗。我是加载的时候on监听不了