## TL;DR
Grant access at the dataset level first, because Superset checks dataset and datasource permissions before it runs the chart query. Add the viewer role to the dataset permissions, confirm the role also has schema access on the database, and reload the chart as the affected user. Admin success with viewer failure is the signature of a permission gap, not a broken chart.

```text
Superset dashboard chart failed: dataset permission denied error fix
```

## Use this when
- Admins see the chart data but regular viewers get a permission denied error on the same chart.
- A new dataset was published to a shared dashboard without role grants.
- The error appears after roles were rebuilt or a dashboard was copied to a new workspace.

## Not for this skill when
- No user, including admins, can run the chart. Check the database connection itself first.
- The chart fails with a SQL error for every viewer. That is a query problem, not a permission problem.

## Steps
1. Reproduce the failure signed in as a viewer role, or use Superset impersonation where enabled, and note the exact dataset named in the error. Verify: the denial names the dataset the chart is built on
2. Open the dataset settings and review which roles can access it, then add the viewer role used by the dashboard audience. Verify: the role appears in the dataset access list after saving
3. Check the database and schema permissions for the same role, since dataset access alone does not grant the underlying schema. Verify: the role holds schema access on the database the dataset queries
4. Confirm the dashboard and chart are published and shared with the same role, so no higher layer blocks the request first. Verify: the viewer can open the dashboard and see the chart frame load
5. Reload the chart as the viewer and confirm rows return, then check the Superset logs for any remaining permission entries. Verify: the chart renders data and no new denial is logged
6. Review other datasets on the same dashboard for the same missing grant so viewers do not hit the error chart by chart. Verify: every dataset on the dashboard lists the audience role

## Why it happens
Superset was designed for governed self service, so it denies by default and reports the first missing layer. Because owners and admins bypass most checks, the gap stays invisible until the dashboard reaches its real audience. Granting the dataset and schema to the audience role, rather than sharing an owner login or widening admin rights, keeps the governance model intact while fixing the chart.

Superset enforces permissions in layers. A user needs access to the dashboard, the chart, the dataset, and the database schema the dataset queries. The chart error names the dataset because that is the layer that rejects the request, even when the dashboard itself opens fine. Datasets created by one team are often left with owner-only visibility, so every other role hits the denial the first time the dashboard is shared.

Field notes for Superset and Preset specifically. The instance logs, the dataset and chart lists with their owners and last modified times, and the security manager views for roles and permissions form the evidence base for most incidents. Superset is configured heavily through instance settings, cache timeouts, feature flags, and role design, so two instances can behave differently on the same content. Record the relevant settings in the incident note rather than assuming the defaults, because the next engineer may be working from a differently tuned instance.

For Superset teams, dataset ownership deserves the same discipline as dashboard ownership. Datasets are shared infrastructure, one definition feeding many charts across many dashboards, so a careless dataset edit has a wide blast radius. Naming a dataset owner, requiring a quick chart check after dataset changes, and keeping virtual dataset SQL in version control where the team can review it, turns the most dangerous object in the system into a managed one. Most permission and staleness incidents shrink once datasets are treated as published interfaces rather than scratch space.
## Variants and edge cases
### Superset chart permission denied for viewers only
The audience-specific phrasing that separates this from a connection failure.
### Apache Superset dataset access role grant fix
The grant-focused variant naming the exact fix location.
### Superset dashboard loads but chart shows permission error
The mixed-behaviour phrasing viewers describe.

## Provenance

Resolved from the public thread: https://vectle.com/posts/pst_WptZ0mdxV8IfM9m5YMXGkQ