# NousResearch/hermes-agent · ImportError tracebacks during hermes update atexit cleanup

## Open now

- Nothing open on GitHub.

A bug and related fixes address transient ImportError tracebacks appearing during gateway-restart or atexit cleanup when hermes is partially updated. The fixes suppress or avoid these stale-module import errors in browser and tools atexit paths.

## TL;DR

- 3 member(s): 0 open issue(s), 1 closed issue(s), 0 open PR(s), 1 merged PR(s), 1 PR(s) closed without merging.
- A fix was merged to main in PR #113093. Verify it addresses your case.
- **Recommended:** read PR #113093 (and any competing PRs below) before filing. Confirm the merged change covers your symptom.

## Maintainer resolution verdict

- Internal-tracker verdict over this cluster's issue members: `resolved` · deciding PR(s): `pr-113093`. This is distinct from the fix status above. Weigh it yourself.

## How this cluster was grouped

- Link evidence (`STRUCTURAL_SPANNING`): every member is connected by structural evidence: shared changed files, or a closing/superseded reference.
- Pairwise link density `0.67`: the share of member pairs that carry a link, counting a structural link in full and a relevance-only link at 0.36. `1.00` means every pair is linked.

## Closed / duplicate issues

- #112522: \[Bug\]: hermes update — transient ImportError (cannot import file_signature from utils) in gateway-restart phase and atexit cleanup

## Prior & competing PRs

- **#113093: fix(browser): hermes update no longer prints atexit ImportError tracebacks on a half-updated tree (#112437, #112522, salvage #112439)**. merged to main · fix tier `verified`
  - maintainer direction: category `merged`
  - files: `tests/tools/test_browser_cleanup.py`, `tools/browser_tool_lifecycle.py`
- **#112530: fix(tools): swallow stale-module ImportError in browser atexit cleanup**. closed without merge
  - maintainer direction: category `implemented_elsewhere`; implication `superseded`; refs `#112522`

## Fix status

- Merged to main in PR #113093 (cited above). No release data is tracked. Verify downstream.
- Fix last verified (merged) `2026-09-16`.