504 Upstream timeout
The target site did not respond in time.
What causes it
- The site is slow or overloaded.
- A JavaScript-heavy page exceeded the render timeout.
How to fix it
- Retry, timeouts are frequently transient.
- Check the `trace` on a successful call to the same host to see where time goes.
- Persistent timeouts on a host you control are worth reporting.
What it looks like
{
"type": "https://snakereach.com/errors/upstream-timeout",
"title": "Upstream timeout",
"status": 504,
"detail": "timed out after 30.0s"
}