# Lightdash: Major incident: Dashboard charts failures (app.lightdash.cloud)

**Summary:** Lightdash reported a major outage affecting dashboard chart queries for app.lightdash.cloud users on Lightdash Cloud (US), with errors stating "Invalid timezone: project\_timezone". It started at 2026-06-12 10:19 UTC and was resolved at 2026-06-12 10:44 UTC, lasting 24 min; a fix was applied and monitored. _(machine-written, sol)_
- Kind: Major incident · Label: outage (model (Jev))
- Changed: 2026-06-12 10:19 UTC · Detected: 2026-10-17 18:22 UTC
- [Source: https://stspg.io/vl692tg4vck7](https://stspg.io/vl692tg4vck7)
- [Company: Lightdash](https://rewindex.com/company/lightdash.md)
- Versions: before (none: first archived) → after incident\_version:68/02syw6mggs7w@fbbce0edc64a
- Change 1 of 1 for this incident

## What changed

**1. Added: Title**

```diff
+ Dashboard charts failures (app.lightdash.cloud)
```

**2. Added: Impact**

```diff
+ major
```

**3. Added: Status**

```diff
+ resolved
```

**4. Added: Start time**

```diff
+ 2026-06-12 10:19 UTC
```

**5. Added: Resolved time**

```diff
+ 2026-06-12 10:44 UTC
```

**6. Added: Affected components**

```diff
+ Lightdash Cloud - Lightdash Cloud (US), Lightdash Cloud (US)
```

**7. Added: Update** (identified) · 2026-06-12 10:19 UTC

```diff
+ Dashboard chart queries are erroring with "Invalid timezone: project_timezone" (for app.lightdash.cloud users) We've identified the issue and are working on a fix.
```

**8. Added: Update** (monitoring) · 2026-06-12 10:28 UTC

```diff
+ Currently monitoring the fix applied - should be done shortly
```

**9. Added: Update** (resolved) · 2026-06-12 10:44 UTC

```diff
+ This incident has been resolved.
```

## History of this incident

| When (UTC) | Change | Label |
| --- | --- | --- |
| 2026-06-12 10:19 UTC | Major incident: Dashboard charts failures (app.lightdash.cloud) (this change) | outage |

All Lightdash changes: [timeline](https://rewindex.com/company/lightdash/changes.md)
_Diff excerpts are shown on normalized text: dates, counters and tokens appear as ‹date›, ‹count›, ‹tok›; noise-only edits are hidden. Rewindex shows the changed passages, not a copy of the page._


---
Canonical: https://rewindex.com/change/i5c5b6228326b29 · Markdown: https://rewindex.com/change/i5c5b6228326b29.md · JSON: https://rewindex.com/api/v1/changes/i5c5b6228326b29 · Generated 2026-10-18T03:55:52.274Z