Changes / Amplitude / Amplitude Experiment Issue with Charts Loading
Amplitude: Critical incident: Amplitude Experiment Issue with Charts Loading
Summary
Amplitude reported a critical Experiment outage: exposure charts failed to load for some flags, and analysis pages failed for some experiments with user-property errors. It started at 2026-03-27 15:52 UTC and was resolved at 2026-03-27 17:11 UTC, lasting 1 h 19 min; Amplitude rolled out a fix.
Machine-written from the diff below (Sol; type: incident outage). Check the diff before relying on it.
What changed
Before: not present
After: Amplitude Experiment Issue with Charts Loading
Before: not present
After: critical
Before: not present
After: resolved
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After: 2026-03-27 15:52 UTC
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After: 2026-03-27 17:11 UTC
Before: not present
After: Experiment - Web Application, Web Application
Before: not present
After: For some flags, the exposures chart is not loading properly. For some experiments, the analysis page is not loading properly saying "This experiment's user property is not available yet. It will appear after users are assigned." and "Invalid user property gp:". We are working on a fix.
Before: not present
After: We have identified a fix. We are rolling the fix out.
Before: not present
After: We have fixed the issue
First version of this incident archived by Rewindex. View the live incident (opens in new tab).
History of this incident
| When (UTC) | Change | Kind |
|---|---|---|
| Critical incident: Amplitude Experiment Issue with Charts Loading (this change) Amplitude reported a critical Experiment outage: exposure charts failed to load for some flags, and analysis pages failed for some experiments with user-property errors. It started at 2026-03-27 15:52 UTC and was resolved at 2026-03-27 17:11 UTC, lasting 1 h 19 min; Amplitude rolled out a fix. | Major incident |
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