Cairn

Unicode/UTF-8 encoding crash fixes across platforms

NousResearch/hermes-agent · cluster 10956

Data as of

Nothing open on GitHub. Fix merged in #19424. Check it covers your case.

The short answer

0open issues
0open PRs
5items grouped
Known?
Yes. 5 related items grouped here, 1 issue already closed.
Fix event
A fix was merged to main in PR #19424. Check it covers your case. No release data is tracked.
Tracker
The maintainers' tracker marks this unresolved. That is separate from the fix event.
Still open
Nothing open on GitHub.

Multiple fixes addressing startup crashes caused by non-UTF-8 console encodings (e.g., cp1252, latin-1) on Windows, Raspberry Pi, and other platforms. The issues center on box-drawing characters and similar output triggering UnicodeEncodeError when stdout/stderr is not UTF-8.

Open issues0

No open issues.

Open PRs0

No open pull requests.

Fixes on record

Merged to main. A stamp counts the issues a fix is linked to.

  • #19424 fix(windows): enforce UTF-8 stdout/stderr to prevent UnicodeEncodeError crash

    merged to main

    files: hermes_cli/__init__.py

3 PRs closed without merging

From the close comments: done elsewhere 1 · duplicate 1 · merged via another change 1

  • #10975 fix(cli): avoid Windows console Unicode startup crashes · duplicate → #10979, #10975
  • #10979 fix(cli): force UTF-8 stdio bootstrap · done elsewhere → #19424
  • #19259 fix(windows): enforce UTF-8 to prevent UnicodeEncodeError crash on startup · merged via another change → #19424
Closed issues · 1
  • Closed#10956[Windows] UnicodeEncodeError crash on startup — box-drawing chars in print() kill the gateway under cp1252
How this cluster was grouped
  • Link evidence (structural links throughout): every member is connected by structural evidence: shared changed files, or a closing/superseded reference.
  • Pairwise link density 0.40: the share of item 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.

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At a glance

Merged PRs
#19424
Closed issues
1
Attempts
3 PRs closed without merging
Fix link checked
3 May 2026

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