How can I see the cause when I get an error?

I’ve seen some screenshots in the forum where there is an error and it shows a “cause”, like this:

But I’ve never seen that in my instance, I’ve only seen errors without the cause section:

Is this a node-type-specific thing or do I need to do something in my n8n to get this to show?

Hi @napter, error handling is indeed node specific (to some extent at least). However, the undefined value in your screenshot does look like a bug to me. Can you confirm if this issue still persists with the current version of n8n and which node exactly throws this?

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