Test Webhooks get status 404 in Stripe Dashboard even though CLI and Rails logs reports Status 200

[gustafr]

Hi,
I'm having a problem when testing my webhooks integration with the stripe_events gem.
I'm triggering a webhook from the CLI, the CLI interface reports <-- [200] POST for the event.
The event reaches my local endpoint, I can process the event as expected and my rails logs is also showing "Completed 200 OK".
But in my Stripe Dashboard all webhooks have status "404 ERR" which is not expected. I have tried sending both platform webhooks and connect webhooks but it's the same result for both.
Not sure what I'm missing? Anyone else had this problem?