Error with no text explanation "type error e.traceback is undefined in console"

[Cancid]

As can be seen in screenshot, I receive no error information when the box appears. In the console I get the error type error e.traceback is undefined" I an only assuming they are related.

Thanks for the book and the help!

[bnmnetp]

Sorry, I don't even know what book you are using. That is why we have the template... to help you make an effective report.

[Cancid]

My apologies, didn't see the template on the first pass. My username is Cancid and this is the JS4Python book. I am on section 2.8, activity 2 but has been an issue throughout all of the activities and even many of the examples (attached is a screenshot of an example in the book not working). The error (both the blank error box and the TypeError) seems to occur regardless if the code is functional or not. I am on Firefox 89.0.2 I have tried it with all of my extensions turned off as well. I get the same error in chrome with no extensions installed. I am on windows 10 Version 10.0.19042 Build 19042

I can send over more recreations of the issue if they would be helpful. If you need anything else let me know. Thanks again.

[bnmnetp]

Thanks for clarifying.

It seems there are a couple of things that need to be updated.

1. We need to update our examples to use let and or var on initial use, that is the error in the example here.
2. We need to fix out function that outputs the errors so that you can see them.