When trying to activate a HubSpot trigger based workflow, it fails with alert title Workflow could not be activated and message: The URL path that the "HS deal stage changed" node uses is already taken. Please change it to something else.
Even if not activated in the UI, the web hooks called by HubSpot where triggering it.
What is the error message (if any)?
The URL path that the "HS deal stage changed" node uses is already taken. Please change it to something else.
This error usually comes up when copying a trigger node that belongs to another active workflow. If you delete the existing trigger node and create a new one from scratch, the error should disappear (as the new node will have a unique URL for Hubspot to send webhooks to).
One additional thing to keep in mind: Hubspot is rather peculiar when it comes to these webhooks used by the n8n trigger node. They only allow a single webhook per registered application. So if you want to use two different Hubspot triggers at a time, you would need to register a separate application with Hubspot (and a corresponding set of credentials in n8n as described here).