# Amplitude: Charts and cohorts not saving

- Impact (vendor’s label): major
- Status: resolved
- Started: 2023-05-04 22:16 UTC · Resolved: 2023-05-04 23:04 UTC · Duration: 48 min
- Updates: 1
- [Vendor status page: https://status.amplitude.com/incidents/phq5xx0dnd1h](https://status.amplitude.com/incidents/phq5xx0dnd1h)
- [Company: Amplitude](https://rewindex.com/company/amplitude.md)

## Timeline of updates

- **resolved** 2023-05-04 23:04 UTC: The incident is resolved. Since 11:30 AM PT May 4th 2023, the Amplitude website began encountering intermittent errors when customers tried to create new or save charts/cohorts. The issue was identified and resolved at 3:45 PM PT. Existing charts were not impacted by this incident. There was no data loss and no actions are required from our customers. The root cause for this incident was a bug introduced to the key creation process in the chart and cohort creation code path which caused key collision.

_From the vendor’s published history: only the final update text is available for incidents before Rewindex began polling this page._


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Canonical: https://rewindex.com/company/amplitude/incidents/phq5xx0dnd1h · Markdown: https://rewindex.com/company/amplitude/incidents/phq5xx0dnd1h.md · JSON: https://rewindex.com/api/v1/companies/amplitude/incidents/phq5xx0dnd1h · Generated 2026-10-18T10:42:01.352Z