After upgrading to latest 0.209.4 release web GUI Freezes after running a couple of seconds

Describe the issue/error/question

After upgrading to latest release web GUI Freezes after running a couple of seconds.
I can’t open worflows and get the following error, please see attacked picture.
problem opening workflow

What is the error message (if any)?

Cannot read properties of undefined (reading ‘data’)

Please share the workflow

Its all of them

Share the output returned by the last node


Information on your n8n setup

  • **n8n version: 0.209.4
  • **Database you’re using (default: SQLite):Postgres
  • **Running n8n with the execution process [own(default), main]:?
  • **Running n8n via [Docker, npm,, desktop app]:npm

Hi @karlsjo, I am very sorry to hear you’re having trouble.

Unfortunately I can’t reproduce this problem. Are you seeing any errors in your server logs?

No, and now it works. The n8n service works fine, it was the gui that locked up while looking at workflows. As stated, I upgraded to the latest version and I had two chrome tabs opened displaying my n8n. I cleared the cookies, didn’t help. And then just now I closed one of the tabs and bam works as it should. You can close this question. Thank you for the quick reply.

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