I have created a workflow. But it is not working can any one help me please?
Welcome to the community @Naias2020!
Do you have only one or multiple Webhook-Nodes in the workflow?
It seems you have copied the webhook. Maybe the same webhook is active on another workflow.
It looks like that the path for your Webhook node is already registered. Can you try adding a new Webhook node and remove the one you already have? Alternatively, you can change the path in the Path field.
Let me know if this helps