openclaw - 💡(How to fix) Fix [Bug]: Tool output unknown error after forced update to v2026.4.2 [1 participants]

Tool output unknown error after forced update to v2026.4.2

TL;DR

Downgrade to version v2026.3.28 to potentially resolve the tool output issue caused by the forced update to v2026.4.2.

Guidance

• Verify that the issue is indeed caused by the update to v2026.4.2 by checking the version history and release notes for any known issues.
• Attempt to downgrade to v2026.3.28 using npm by running a command like npm install -g [email protected] to see if the tool output is restored.
• Investigate why the package manager is updating OpenClaw without request, potentially by checking configuration files or environment variables related to npm.
• Consider locking the version of OpenClaw to prevent future unintended updates.

Example

No code snippet is provided as the issue does not imply a specific code-related fix.

Notes

The solution assumes that the issue is specific to the update to v2026.4.2 and that downgrading will resolve the problem. However, this may not be the case if there are other underlying issues.

Recommendation

Apply workaround: Downgrade to v2026.3.28, as it is stated as the last known good version and the update to v2026.4.2 introduced the issue.