Outage in Gitbook
Sites are failing intermittently with 500 Internal Server Error
Resolved Minor
June 22, 2026 - Started 26 days ago
- Lasted about 1 hour
Incident Report
Summary AI Generated
A GitBook code migration last week changed the shape of `pageActions` data, but the published content layer was not updated to handle the new format, causing intermittent 500 errors for some public sites over roughly 1.3 hours. Sites still served cached content using the old data shape were unaffected. The issue was resolved by updating the code to support both data shapes simultaneously until all sites fully transition to the new format.
The issue affects some sites, resulting in Internal Server Error when visiting a site. We have identified a cause and expect to have a fix in near future. Not all sites are affected due to caching.
Components affected
Gitbook Public ContentTrusted by 1,000+ teams
The Status Page Aggregator with Early Outage Detection
Stop finding out about outages from your users. Monitor 6,320+ cloud services and get alerted the second something breaks.
Latest Updates ( sorted recent to last )
MONITORING
26 days ago - at 06/22/2026 03:21PM
As part of the reorderable page actions last week we migrated pageActions into a new shape and removed old values. Our published content wasn't properly updated to no longer check the old values, and thus errored out because it was checking data that wasn't there (depending on what version of the customization object you were served, some sites were still using the old shape and thus functioned).
We're mitigating by properly checking both data shapes for the foreseeable future, until all sites are completely using the new format.
IDENTIFIED
26 days ago - at 06/22/2026 02:58PM
The issue affects some sites, resulting in Internal Server Error when visiting a site. We have identified a cause and expect to have a fix in near future. Not all sites are affected due to caching.
Latest Gitbook outages
GitBook webapp is returning 500 - 23 days ago
Increased API error rate - about 2 months ago
Degraded database performance - 2 months ago
500 errors on some *.gitbook.io published sites - 2 months ago
Git Sync executions are delayed due to third-party outage - 3 months ago
The Status Page Aggregator with Early Outage Detection
With IsDown, you can monitor all your critical services' official status pages from one centralized dashboard and receive instant alerts the moment an outage is detected. Say goodbye to constantly checking multiple sites for updates and stay ahead of outages with IsDown.
Start free trialNo credit card required · Cancel anytime · 6320 services available
Integrations with
