GitBook incident
Sites are failing intermittently with 500 Internal Server Error
GitBook experienced a minor incident on June 22, 2026 affecting Public Content, lasting —. The incident has been resolved; the full update timeline is below.
Affected components
Update timeline
- identified Jun 22, 2026, 02:58 PM UTC
Status: Identified 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. Affected components Public Content (Partial outage)
- monitoring Jun 22, 2026, 03:21 PM UTC
Status: Monitoring 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. Affected components Public Content (Degraded performance)
- resolved Jun 22, 2026, 04:14 PM UTC
Status: Resolved The fix released has solved the issue, all systems should be operational now. Affected components Public Content (Operational)