# Prefect: Flow Runs Crashing on Modal Push Work Pools

- Impact (vendor’s label): minor
- Status: resolved
- Started: 2026-10-16 20:08 UTC · Resolved: 2026-10-16 20:31 UTC · Duration: 23 min
- Updates: 2 · Affected components: Orchestration
- [Vendor status page: https://status.prefect.io/incidents/01M53589KQQMAA1W8TQ2CQVNM4](https://status.prefect.io/incidents/01M53589KQQMAA1W8TQ2CQVNM4)
- [Company: Prefect](https://rewindex.com/company/prefect.md)

## Timeline of updates

- **identified** 2026-10-16 20:08 UTC: Since 18:00 UTC on October 16, most flow runs on Modal push work pools crash during infrastructure startup. Affected runs move from Pending to Crashed with the message "sandbox exited with non-zero code 137." We have tracked the issue to an upgrade in the Modal client library and working to roll back.
- **resolved** 2026-10-16 20:31 UTC: This incident has been resolved and Modal push pools are fully operational.


---
Canonical: https://rewindex.com/company/prefect/incidents/01M53589KQQMAA1W8TQ2CQVNM4 · Markdown: https://rewindex.com/company/prefect/incidents/01M53589KQQMAA1W8TQ2CQVNM4.md · JSON: https://rewindex.com/api/v1/companies/prefect/incidents/01M53589KQQMAA1W8TQ2CQVNM4 · Generated 2026-10-19T23:37:38.321Z