Debugging qml for a plugin

[Ant0ine64]

Hi, I'm trying to create a plugin but it seems when I have some invalid qml, I'm not able to know what's wrong with it, I can't see anything in the logs. (By invalid I mean, adding some invalid statements made out of randoms letters)

The plugins adds a tool, when in getMetaData() I give either a wrong qml file path or a qml file with something wrong, nothing happens when I click on the tool icon in cura.

I think this is a code concerned but it does not give any error:
https://github.com/Ultimaker/Uranium/blob/main/UM/Qt/Bindings/ActiveToolProxy.py#L43
https://github.com/Ultimaker/Cura/blob/main/resources/qml/Toolbar.qml#L206

I would really appreciate if anyone could give me advice on how to debug some thing like this.