There was a problem activating the workflow: "ERROR: You specified an invalid date."

[Alexandre_Mercier]

Describe the problem/error/question

When trying to activate the workflow, it gives me the error below. Event if i remove and recreate all nodes it gives me this error

What is the error message (if any)?

When trying to activate the workflow
There was a problem activating the workflow: “ERROR: You specified an invalid date.”

Please share your workflow

Share the output returned by the last node

Information on your n8n setup

• n8n version: latest
• Database (default: SQLite):
• n8n EXECUTIONS_PROCESS setting (default: own, main):
• Running n8n via (Docker, npm, n8n cloud, desktop app): docker
• Operating system:

[ihortom]

Hey @Alexandre_Mercier , I had no problem activating your workflow on n8n Cloud workspace. The error seems to complain about the GSheet trigger poling schedule, there are no other date values in the workflow.

Perhaps it is caused by your own environment? Where do you run the app?

[avex-hakon]

I had the same error. My n8n is selfhosted and the error was resolved by removing the “” around the env variable GENERIC_TIMEZONE.

[Alexandre_Mercier]

Thank you! In my case, I had to remove completely the GENERIC_TIMEZONE env variable.