Bug type

Regression (worked before, now fails)

Summary

After upgrading to OpenClaw v2026.3.1, Vertex-backed embedded runs fail with:

Cannot convert undefined or null to object

This affects both Telegram group replies and Vertex-based cron jobs.

Non-Vertex models (e.g. openai-codex/..., OpenRouter) continue to work.

Environment

• OpenClaw: 2026.3.1
• OS: macOS (arm64)
• Node: 25.5.0
• Channel: Telegram
• Gateway: local mode

Observed behavior

• Telegram group mentions that route to Vertex fail with:
• embedded run agent end ... isError=true error=Cannot convert undefined or null to object
• Vertex cron jobs also fail with the same error.
• Direct chat and non-Vertex model routes are mostly fine.

Not a config-only issue

I confirmed this is not just a group permission/config mistake:

• Gateway is healthy
• Telegram account/channel status is OK
• Non-Vertex routes succeed
• Failure is isolated to Vertex execution paths

Repro (high level)

1. Upgrade to v2026.3.1
2. Use a Telegram group route / cron route that runs google-vertex/...
3. Trigger an embedded run
4. Observe immediate failure before normal model output with:

• Cannot convert undefined or null to object

Related context

This appears related to dependency/auth import-chain regression discussed in:

• PR fix(deps): restore node-domexception for google auth [AI-assisted] #30026 (fix(deps): restore node-domexception for google auth)

Could maintainers confirm whether this issue is fully covered by #30026 and when it is expected in a release?

Temporary workaround

• Route affected flows to non-Vertex providers until fix is released.

Steps to reproduce

1. Upgrade OpenClaw to v2026.3.1 on macOS.
2. Configure a Telegram group route or cron job to use a Vertex model (google-vertex/...).
3. Trigger an embedded run (e.g., mention bot in group or wait for cron).
4. Observe run fails quickly with: Cannot convert undefined or null to object.

Expected behavior

Vertex-backed embedded runs should complete normally (or return a normal model/tool error), and Telegram group replies + cron tasks should work as before upgrade.

Actual behavior

Vertex-backed embedded runs fail immediately with Cannot convert undefined or null to object.
Telegram group @ replies fail intermittently/consistently on Vertex routes, and Vertex cron jobs enter repeated error/backoff.
Non-Vertex routes (e.g., openai-codex/..., OpenRouter) continue to work.

OpenClaw version

2026.3.1

Operating system

MACOS

Install method

No response

Logs, screenshots, and evidence

Impact and severity

No response

Additional information

Likely related to PR #30026 (node-domexception dependency regression in google auth import chain).