double se::Value::toDouble() const: assertion "_type == Type::Number || _type == Type::Boolean || _type == Type::BigInt || _type == Type::String" failed about cocos-engine

[smallmain]

Encountered the same problem.

[smallmain]

I found the problem was that the data of a certain prefab was corrupted:

    "_lpos": {
      "__type__": "cc.Vec3",
      "x": 0,
      "y": 160,
      "z": 0
    },
    "_lrot": {
      "__type__": "cc.Quat",
      "x": null,
      "y": null,
      "z": null,
      "w": null
    },
    "_lscale": {
      "__type__": "cc.Vec3",
      "x": 1,
      "y": 1,
      "z": 0
    },

_lrot is null, but i don't know why this is happening.
The only rotation-related operation I performed on this node was this.node.setWorldRotation(Quat.IDENTITY);

Error data should not be serialized:

• Verify before storing.
• Also related to this proposal: #15941

After this problem occurs, it is very difficult to debug, and it will be fine without loading. It is a time bomb.

[GamewolfLongMan]

This is not the only one prefab with this problem.
one day some prefab get broken and I dont know why

[dumganhar]

It's possible the same issue which was fixed at #16935
You could try to customize the engine , rebuild the engine and see whether it still exists.