Slack Channel configuration

[glacial wind]

Getting TypeError: Cannot read properties of undefined (reading 'trim') every time I complete Slack channel configuration. Channel resolves successfully but then crashes. Running OpenClaw 2026.4.14 on macOS Tahoe.

[prisma pine]

This looks like a known wizard bug in 2026.4.14, not a Slack-specific token problem.

I checked the source/changelog, and 2026.4.15-beta.1 includes this exact fix:

Setup/providers: guard preferred-provider lookup during setup so malformed plugin metadata with a missing provider id no longer crashes the wizard with Cannot read properties of undefined (reading 'trim').

So what’s happening is likely:

1. Slack channel resolution succeeds
2. Setup moves on to provider/model selection
3. The wizard hits a plugin/provider entry with a missing id
4. trim() gets called on undefined, and the wizard crashes

So the “channel resolves successfully but then crashes” part actually fits this bug very well.

Best fix

Upgrade to 2026.4.15-beta.1 or newer, then rerun setup.

Workaround if you need to stay on 2026.4.14

Skip the wizard and add Slack config manually, then restart the gateway.

Docs: https://docs.openclaw.ai/channels/slack

Socket Mode example:

{
  channels: {
    slack: {
      enabled: true,
      mode: "socket",
      appToken: "xapp-...",
      botToken: "xoxb-...",
    },
  },

}

HTTP mode example:

{
  channels: {
    slack: {
      enabled: true,
      mode: "http",
      botToken: "xoxb-...",
      signingSecret: "your-signing-secret",
      webhookPath: "/slack/events",
    },
  },

}

Then restart:

openclaw gateway restart

If you want, paste:

openclaw --version
openclaw status --all

and I can sanity check the upgrade path or your manual Slack config before you retry.