Issues with webhook giving 404 on an active workflow

Hello,

I have an n8n instance running on the cloud account for a while now. Every once in a while the webhook is throwing errors when triggered after a whole eg if triggered after a few hours or a day after the previous one


{
    "code": 404,
    "message": "The requested webhook \"POST 313b2248-9c23-4070-881b-1cc78691cc4b/sent\" is not registered.",
    "hint": "The workflow must be active for a production URL to run successfully. You can activate the workflow using the toggle in the top-right of the editor. Note that unlike test URL calls, production URL calls aren't shown on the canvas (only in the executions list)"
}

I have the workflow as active/in production.

When I click on the test webhook its working,

If I activate and deactivate the workflow it runs but after a while it stops listening for new events

workflow sample screenshot

workflow sample json