# NousResearch/hermes-agent · Handle missing agent in session without crashing

## Open now

- Nothing open on GitHub.

These items address a bug where a session with no agent causes an AttributeError crash and silently drops the prompt. The fix returns a retryable error for the turn instead of crashing or losing the prompt.

## 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 #112223. Verify it addresses your case.
- **Recommended:** read PR #112223 (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-112223`. 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evidence (`STRUCTURAL_SPANNING`): every member is connected by structural evidence: shared changed files, or a closing/superseded reference.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

- #111531: \[Bug\]: Desktop turn dies with \`AttributeError: 'NoneType' object has no attribute 'interim_assistant_callback'\` when a session's agent is None — prompt silently dropped

## Prior & competing PRs

- **#112223: fix(tui_gateway): a session with no agent fails the turn with a retryable error instead of dropping the prompt (#111531, salvage #111534)**. merged to main · fix tier `verified`
  - maintainer direction: category `merged`
  - files: `tests/tui_gateway/test_none_agent_turn_guard.py`, `tui_gateway/prompt_turn.py`, `tui_gateway/server.py`, `tui_gateway/user_messages.py`
- **#111534: fix(tui_gateway): fail a turn whose session has no agent instead of crashing**. closed without merge
  - maintainer direction: category `merged_via`; implication `superseded`; refs `6f0be923bc`, `#112223`

## Fix status

- Merged to main in PR #112223 (cited above). No release data is tracked. Verify downstream.
- Fix last verified (merged) `2026-09-16`.