OpenClaw Gateway Error Troubleshooting

What the OpenClaw Gateway Does (Quick Reference)

The Gateway is the control plane for sessions, channels, tools, events, and connected clients. The default local dashboard is normally served on 127.0.0.1:18789, while authentication and device identity govern WebSocket access. A running process is not necessarily a reachable or authorized Gateway.

Use this diagnostic ladder before editing configuration:

openclaw status
openclaw gateway status
openclaw logs --follow
openclaw doctor
openclaw channels status --probe

A healthy status reports a running runtime and a successful connectivity probe. If runtime is running but connectivity fails, focus on URL, bind mode, authentication, or stale client state.

Fix: 'connect failed: error: pairing required'

First identify the pairing domain. PAIRING_REQUIRED in a Control UI or node connection means device identity needs approval. List the requests, review the requested role and scopes, and approve the matching ID:

openclaw devices list
openclaw devices approve <REQUEST_ID>

For a Telegram, WhatsApp, Slack, or Discord sender, use channel pairing instead:

openclaw pairing list <channel>
openclaw pairing approve <channel> <CODE>

Do not rotate the shared Gateway token when the detailed reason is a scope, role, or metadata upgrade. Re-pair or approve the requested contract.

Fix: '401 Missing Authentication Header'

This symptom means the endpoint expects credentials but the client did not provide them in the supported path. Inspect the active settings:

openclaw config get gateway.auth.mode
openclaw config get gateway.auth.token
openclaw gateway status --json

For the Control UI, paste the configured token into its settings. For an explicit remote CLI URL, pass credentials explicitly; OpenClaw does not assume local stored credentials apply to every --url target. If a reverse proxy strips WebSocket headers or terminates auth incorrectly, fix that proxy path rather than disabling Gateway authentication.

Fix: 'zsh: command not found: openclaw' After Install

This is usually a shell PATH problem, not a Gateway failure:

node -v
npm prefix -g
echo "$PATH"

On macOS and Linux, the executable normally lives under the global npm prefix's bin directory. Add that directory to the correct shell startup file, open a new terminal, and confirm openclaw --version. On Windows, ensure the npm global prefix is in the user PATH. The official installer handles Node and path setup for most users, so rerunning it can be safer than inventing a global symlink.

Fix: WebSocket Handshake Failure / SSL Errors

Confirm the URL scheme matches the endpoint: use ws:// for local HTTP and wss:// behind HTTPS. Check certificate validity, proxy WebSocket upgrade support, the configured browser-origin allowlist, and whether the Gateway is bound where the proxy expects it.

If the local dashboard fails, test the HTTP surface directly:

openclaw gateway restart
lsof -i :18789
curl http://127.0.0.1:18789

If curl returns OpenClaw HTML, the Gateway is serving and the remaining problem may be an old deep link, browser cache, stale tab, origin mismatch, or authentication state.

Fix: GatewayRequestError: RangeError: Maximum Call Stack Size Exceeded

This exact JavaScript error is not assigned one universal fix in the current official runbook. Capture the command, stack trace, active OpenClaw version, plugin list, and sanitized diagnostics before changing state. Then update to a supported release, disable recently added plugins one at a time, and run openclaw doctor.

If the error persists on a clean supported build, generate a sanitized support bundle with the Gateway diagnostics command and report a reproducible case. Do not reset configuration solely because a generic stack-overflow message appeared; recursion can originate in a plugin, malformed data, or a product defect.

Restart the Gateway: Commands for Mac, Windows & Linux

The CLI commands are consistent across supported platforms:

openclaw gateway restart
openclaw gateway status

macOS commonly uses a LaunchAgent, Linux and WSL2 use a systemd user service, and native Windows can use a Scheduled Task or startup fallback. If restart immediately stops again, run openclaw gateway start, inspect logs, and verify that the service account can read the same config and SecretRefs as your terminal.

Reset openclaw.json to Fix Persistent Config Corruption

Back up before resetting. The active config is normally ~/.openclaw/openclaw.json, but profiles and environment variables can point elsewhere. Run openclaw doctor first; it can identify invalid keys, permissions, multiple state directories, and migration issues without destroying channel credentials or session history.

When the config is truly unrecoverable, move the damaged file aside, rerun onboarding, and reintroduce only verified sections. Keep ~/.openclaw/credentials/ and agent state out of the reset unless evidence shows those stores are involved.

For install-level failures, continue to OpenClaw npm and config fixes. For exposed-host failures, review the security guide.

In Verdent

Gateway troubleshooting concerns OpenClaw's control plane. Verdent is a separate development product and does not repair an OpenClaw service. It can, however, provide a code-focused environment when debugging or implementing changes in a repository.

Sources: Gateway troubleshooting, Gateway CLI, OpenClaw installation guide, and Node.js setup.