Expression evaluates to a falsy when debugging workflows after adding datatables

[traininginpower]

Describe the problem/error/question

I have some workflows that used to load config from google sheets, I switched them to load from a datatable. It works for a while and then randomly starts failing with "expression evaluates to a falsly".

If I cut and paste the workflow to a new workflow, it works fine. I can debug. Then days later it too starts failing with the same error.

I had never seen this error when loading config from a google sheet. it only showed up a day or two after switching those nodes to datatables.

What is the error message (if any)?

Problem running workflow
The expression evaluated to a falsy value: a.ok(from)

below is the screen shot.

Please share your workflow/screenshots/recording

attached is the workflow.
Master Warrior - Summary Reports - Class Attendance.json

Share the output returned by the last node

once a node quits with the error (which seems to be any node, even the schedule node at the start), there are no longer any nodes green as if the debugging has quit.

Debug info

core

• n8nVersion: 1.113.3
• platform: docker (cloud)
• nodeJsVersion: 22.19.0
• nodeEnv: production
• database: sqlite
• executionMode: regular
• concurrency: 5
• license: community

storage

• success: all
• error: all
• progress: false
• manual: true
• binaryMode: filesystem

pruning

• enabled: true
• maxAge: 168 hours
• maxCount: 2500 executions

client

• userAgent: mozilla/5.0 (macintosh; intel mac os x 10_15_7) applewebkit/537.36 (khtml, like gecko) chrome/142.0.0.0 safari/537.36
• isTouchDevice: false

Generated at: 2025-11-23T06:43:23.691Z}

[n8n-assistant]

Hey @traininginpower,

Thank you for reaching out! We’ve received your issue and are looking into it. To help us track this internally, we’ve created a Linear ticket with the reference: "GHC-5642".

We’ll keep you updated as we make progress, but if you have any additional details or context to share, feel free to add them here - it’s always helpful!

Thanks for your patience and for bringing this to our attention.

---

For INTERNAL use only: GHC-5642

[n8n-assistant]

Hi @traininginpower 👋

Thanks so much for your patience while we’ve been improving n8n. We know it’s taken some time to review this issue, and we’re currently updating our triage process to better keep up with our growth.

There have been a lot of improvements in recent releases, so we’d really appreciate it if you could check whether this issue still occurs in the latest release.

When you have a moment, please copy and paste the checklist below as a comment so our system can update the status automatically:

[ ] I have updated to the latest stable version of n8n [please specify version number] and I am still experiencing this issue
[ ] Please close this issue – I am no longer experiencing it
[ ] Please close this issue – [please specify a reason]

If we don’t hear from you in the next 14 days this issue will be automatically closed, feel free to reopen - don’t forget to add the checklist above so that our automated systems notify us of the issue.

Thanks again for helping us keep n8n healthy and up-to-date 💚

[n8n-assistant]

As we haven’t heard back from you, we’re going to close this issue to keep things organized. But don’t worry, if you have more information or need further assistance, you’re welcome to reopen the issue anytime or create a new one. We’re always happy to help!

Thanks for reaching out and have a great day! If this was closed by mistake and you have been waiting for us let me know and I can also re-open it.