When I follow the guide and make a native pluggable widget by following this guide (https://docs.mendix.com/howto9/extensibility/build-native-widget/) and include that in my project, without making any changes, as a test I immediately get this error: If I remove the new widget it immediately works again. What is the cause of this error and how can I prevent it? (Using Mendix 9.24.13 and Make it Native 9)