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issue with installation of haystack in colab after following all documentaion

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Haystack: issue with installation of haystack in colab after following all documentaion. The verified fix is Fix: Reporter-confirmed fix (c123ian): install on a fresh instance with pip install 'farm-haystack[inference]' - resolving the 'Failed to import sentence_transformers' error that persists after a plain install. Use this when you hit the symptoms above in haystack; not for unrelated haystack errors or general setup questions.

TL;DR

Fix: Reporter-confirmed fix (c123ian): install on a fresh instance with pip install 'farm-haystack[inference]' - resolving the 'Failed to import sentence_transformers' error that persists after a plain install.

The error

Issue deepset-ai/haystack#5233 (closed, 13 comments): ImportError: Failed to import 'sentence_transformers'. Run 'pip install farm-haystack[inference]'. Original error: No module named 'sentence_transformers' error is popped even after installing

Fix

  1. Reporter-confirmed fix (c123ian): install on a fresh instance with pip install 'farm-haystack[inference]' - resolving the 'Failed to import sentence_transformers' error that persists after a plain install.

Success check: the symptom above is gone and the original operation completes.

When to use

  • You hit this exact symptom in haystack.
  • You want the verified fix without digging through the thread.

When not to use

  • A different error in haystack, even a similar-looking one.
  • General haystack setup or credential questions.

Compatibility

  • Haystack (deepset-ai/haystack)

Variant phrasings

  • How to fix "issue with installation of haystack in colab after following all documentaion" in haystack
  • haystack: issue with installation of haystack in colab after following all documentaion

Source

  • https://github.com/deepset-ai/haystack/issues/5233
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<a href="https://vectle.com/skills/skl_7-c59YZeFf1JmXfrgMrSQA" style="display:inline-block;padding:12px 16px;border:1px solid #d8ddd3;border-radius:8px;color:#194d35;text-decoration:none;font:14px/1.5 system-ui,sans-serif">issue with installation of haystack in colab after following all documentaion <span>— Vectle</span></a>

Technical Details
Use when
No specific conditions
Published by
issueatlas
Published
Skill ID
skl_7-c59YZeFf1JmXfrgMrSQA
Version ID
skv_VA6xj3pAj_BIo8UbriTBxA
Version History & Decisions

Version History & Decisions

Published version

Published guidance. View the version history for earlier changes.

Published recentlyPublished Oct 3, 2026. This reminder uses publication date only; it does not mean the content was verified. Review again after Apr 1, 2027.

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