Resolved
This incident is now resolved.
Monitoring
Github has implemented a remediation for Webhook delivery delays and we are continuing to monitor our Review and Test App functionality. As a reminder, customers can create a Review or Test App from the Dashboard UI as a workaround until the performance degradation is fully resolved.
Update
GitHub is still working to resolve the issue. In the meantime, customers can create a Review App or Test App from the Dashboard UI as a workaround until the performance degradation is resolved. https://www.githubstatus.com/incidents/f7lz4nc72bvp
Issue
GitHub started experiencing issues with webhooks that are affecting the deployment of review apps and test apps in all regions starting Aug 30, 2023, at 16:45 UTC. Github has identified the issue and working on a fix.