[Bug] currentState node isNil and #isVariable does not understand exception

[labordep]

I'm trying to use Seeker with Toplo (Bloc UI layer) but when I'm starting an example I have an error :

See my video : https://user-images.githubusercontent.com/49183340/229313577-60c55d83-fbc6-4b4f-8f83-ca01f2d73203.mp4

My configuration :

• Windows 11 Pro
• Pharo-11.0.0+build.659