That is odd normally there would be some output, the message you are seeing typically means the workflow has crashed the most likely cause is memory but it could be something else.
Can you enable debug logging and see if that shows anything? I would also maybe try your image with just puppeteer and then another with just Python to see if that has any issues.
I suspect puppeteer will be ok as I have an instance running using that but it is always possible that something is causing it to trip up. In your workflow when it runs which is the currently active node when you see the message and have you tried running each node one at a time in the flow?
So it could be an issue with the node or some data is not right going into it. Have you tried a simple hello world in it to confirm that works?
It may be worth raising an issue on the GitHub repo for the node so the node creator can take a look as well, could just be that the import isn’t valid and the node output isn’t going to the right place.