# Encountering "Cannot read properties of undefined (reading 'error')" while working on n8n level 2 course

**URL:** <https://community.n8n.io/t/encountering-cannot-read-properties-of-undefined-reading-error-while-working-on-n8n-level-2-course/182130>\
**Category:** Questions\
**Tags:** node\
**Created:** [September 4, 2025, 5:03pm UTC](https://community.n8n.io/t/encountering-cannot-read-properties-of-undefined-reading-error-while-working-on-n8n-level-2-course/182130 "2025-09-04T17:03:13Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Linear\_Thoughts](https://dub1.discourse-cdn.com/n8n/user_avatar/community.n8n.io/linear_thoughts/32/51549_2.png) [@Linear\_Thoughts](https://community.n8n.io/u/Linear_Thoughts)\
**Post date:** [September 4, 2025, 5:03pm UTC](https://community.n8n.io/t/encountering-cannot-read-properties-of-undefined-reading-error-while-working-on-n8n-level-2-course/182130/1 "2025-09-04T17:03:13Z")

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## Cannot read properties of undefined (reading ‘error’)

receiving this error. i don’t know how to resolve this and after searching the questions section it seems to appear and disappear randomly can someone explain this error to me.

## Workflow

## 

## n8n setup

- **n8n version:** Version 1.109.2
- **Database :default**
- **n8n EXECUTIONS\_PROCESS setting (default: own, main):**
- **Running n8n via : Docker Desktop**
- **Operating system : Windows 11**

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**Author:** ![krisn0x](https://dub1.discourse-cdn.com/n8n/user_avatar/community.n8n.io/krisn0x/32/118504_2.png) [@krisn0x](https://community.n8n.io/u/krisn0x)\
**Post date:** [September 4, 2025, 6:04pm UTC](https://community.n8n.io/t/encountering-cannot-read-properties-of-undefined-reading-error-while-working-on-n8n-level-2-course/182130/2 "2025-09-04T18:04:23Z")

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Hey there!

I had the sam issue - it’s something with the formatting of the message. It’s very strict and most probably incorrectly provided in the course, which results in this error. Or there is some other error which is not really ours to deal with.

Anyhow, you don’t really need that operational to complete the certificate, so carry on - you did what’s needed here 😉

Mark this as solved if it helps!

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**Author:** ![system](https://dub1.discourse-cdn.com/n8n/user_avatar/community.n8n.io/system/32/195824_2.png) [@system](https://community.n8n.io/u/system)\
**Post date:** [September 11, 2025, 6:04pm UTC](https://community.n8n.io/t/encountering-cannot-read-properties-of-undefined-reading-error-while-working-on-n8n-level-2-course/182130/3 "2025-09-11T18:04:25Z")

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