openclaw - 💡(How to fix) Fix [Bug] After upgrading to 2026.4.2, memos-local viewer does not start (port 18799 not listening) [1 comments, 1 participants]

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openclaw/openclaw#60039Fetched 2026-04-08 02:37:04
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Fix Action

Fix / Workaround

OpenClaw Version

  • Reproduced on: OpenClaw 2026.4.2 (Windows)
  • Temporary workaround used: downgrade to 2026.4.1
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OpenClaw Version

  • Reproduced on: OpenClaw 2026.4.2 (Windows)
  • Temporary workaround used: downgrade to 2026.4.1

Plugin

  • memos-local-openclaw-plugin (local/path install)
  • viewerPort configured to 18799
  • plugin enabled and selected in memory slot

Problem

After upgrading OpenClaw to 2026.4.2, gateway starts normally on 18789, but MemOS Viewer is not mounted/started, and 18799 is not listening.

Expected

  • memos-local viewer should start with gateway
  • 18799 should listen and serve viewer UI

Actual

  • 18789 is listening
  • 18799 is not listening
  • logs show memos-local initialized, but no stable viewer startup banner/path

Repro Steps

  1. Use OpenClaw 2026.4.2 on Windows.
  2. Configure memos-local-openclaw-plugin as memory slot plugin and set viewerPort=18799.
  3. Start/restart gateway.
  4. Check local ports.

What I Already Checked

  • Plugin explicitly enabled.
  • Competing memory slot plugins disabled (memory-core, memory-lancedb).
  • installs entry present for memos-local plugin.
  • openclaw config validate passes.
  • Gateway often shows stale process/already listening/health timeout noise during restart cycles.

Additional Notes

  • It looked like a regression around plugin activation/guard behavior in 2026.4.2.
  • Downgrading to 2026.4.1 allowed recovery in my environment.

Could maintainers help confirm whether this is a known regression in 2026.4.2 plugin mount/startup path for memos-local?

extent analysis

TL;DR

Downgrade to OpenClaw version 2026.4.1 as a temporary workaround to resolve the issue with the memos-local-openclaw-plugin not starting.

Guidance

  • Verify that the memos-local-openclaw-plugin is correctly configured and enabled in the OpenClaw settings.
  • Check the logs for any error messages related to the plugin initialization or startup.
  • Confirm that there are no competing plugins or configuration issues that could be preventing the memos-local-openclaw-plugin from starting.
  • Test the gateway startup process multiple times to see if the issue is intermittent or consistent.

Example

No code snippet is provided as the issue does not require a code-level fix.

Notes

The issue appears to be a regression in OpenClaw version 2026.4.2, and downgrading to 2026.4.1 has been confirmed to resolve the issue in the user's environment. However, this is only a temporary workaround, and the maintainers should be contacted to confirm whether this is a known regression and to request a permanent fix.

Recommendation

Apply the workaround by downgrading to OpenClaw version 2026.4.1, as it has been confirmed to resolve the issue in the user's environment.

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