Outage in Expo

Increased rate of workflow runs failing to start

Resolved Minor

February 24, 2026 - Started 3 days ago - Lasted about 7 hours
Official incident page

Incident Report

Summary AI Generated

Expo experienced an increased rate of workflow runs failing to start due to an "Invalid workflow definition" error where the system expected a record but received undefined values. The issue affected users' ability to execute their workflows for 7 hours. The incident was resolved, with a temporary workaround involving minor YAML file modifications to trigger config re-instantiation from GitHub.

We're seeing workflow runs failing to start with error Invalid workflow definition. [jobs]: Invalid input: expected record, received undefined. We're working on a fix. As a temporary fix we recommend changing the YAML file slightly (e.g. add a YAML comment) to trigger a re-fetch from GitHub / reinstantiate workflow config.

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Latest Updates ( sorted recent to last )

RESOLVED 2 days ago - at 02/24/2026 11:20PM

This incident has been resolved.

IDENTIFIED 3 days ago - at 02/24/2026 04:20PM

We're seeing workflow runs failing to start with error

Invalid workflow definition. [jobs]: Invalid input: expected record, received undefined.

We're working on a fix. As a temporary fix we recommend changing the YAML file slightly (e.g. add a YAML comment) to trigger a re-fetch from GitHub / reinstantiate workflow config.

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