ModuleNotFoundError: No module named '_cffi_backend'

[SmartManoj]

Traceback (most recent call last):
  File "/kaggle/working/a.py", line 1, in <module>
    from openhands.sdk import LLM, Conversation, Agent
  File "/usr/local/lib/python3.12/dist-packages/openhands/sdk/__init__.py", line 3, in <module>
    from openhands.sdk.agent import Agent, AgentBase
  File "/usr/local/lib/python3.12/dist-packages/openhands/sdk/agent/__init__.py", line 1, in <module>
    from openhands.sdk.agent.agent import Agent
  File "/usr/local/lib/python3.12/dist-packages/openhands/sdk/agent/agent.py", line 6, in <module>
    from openhands.sdk.agent.base import AgentBase
  File "/usr/local/lib/python3.12/dist-packages/openhands/sdk/agent/base.py", line 10, in <module>
    import openhands.sdk.security.analyzer as analyzer
  File "/usr/local/lib/python3.12/dist-packages/openhands/sdk/security/analyzer.py", line 3, in <module>
    from openhands.sdk.event.base import Event
  File "/usr/local/lib/python3.12/dist-packages/openhands/sdk/event/__init__.py", line 1, in <module>
    from openhands.sdk.event.base import Event, LLMConvertibleEvent
  File "/usr/local/lib/python3.12/dist-packages/openhands/sdk/event/base.py", line 10, in <module>
    from openhands.sdk.llm import ImageContent, Message, TextContent
  File "/usr/local/lib/python3.12/dist-packages/openhands/sdk/llm/__init__.py", line 1, in <module>
    from openhands.sdk.llm.llm import LLM
  File "/usr/local/lib/python3.12/dist-packages/openhands/sdk/llm/llm.py", line 25, in <module>
    from openhands.sdk.utils.pydantic_secrets import serialize_secret, validate_secret
  File "/usr/local/lib/python3.12/dist-packages/openhands/sdk/utils/pydantic_secrets.py", line 3, in <module>
    from openhands.sdk.utils.cipher import Cipher
  File "/usr/local/lib/python3.12/dist-packages/openhands/sdk/utils/cipher.py", line 12, in <module>
    from cryptography.fernet import Fernet
  File "/usr/lib/python3/dist-packages/cryptography/fernet.py", line 16, in <module>
    from cryptography.hazmat.primitives import hashes, padding
  File "/usr/lib/python3/dist-packages/cryptography/hazmat/primitives/padding.py", line 11, in <module>
    from cryptography.hazmat.bindings._padding import lib
ModuleNotFoundError: No module named '_cffi_backend'

Solution: update cryptography

Old one: cryptography-3.4.8
New one: cryptography-46.0.3

[enyst]

That's quite a difference! Thank you for the report!

@OpenHands Let's fix this library version.

[openhands-ai]

Uh oh! There was an unexpected error starting the job :(