Report helpful error message for missing "jwt" dependency #526

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1. supermitch

   added

   enhancement

   on Jul 16, 2020
2. supermitch

   assigned

   PJSimon

   and

   sujaygarlanka

   on Jul 16, 2020
3. sujaygarlanka commented on Jul 17, 2020

   

   sujaygarlanka

   on Jul 17, 2020

   Contributor

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   @supermitch Thank you for the feedback! We will take a look at this.
4. sujaygarlanka commented on Sep 10, 2020

   

   sujaygarlanka

   on Sep 10, 2020

   Contributor

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   @supermitch We are currently prioritizing bugs over enhancements in all our SDKs, so it may take a while for us to get to some of these. If are interested in submitting PRs for the enhancements, we would love to take a look!
5. federicojasson commented on Oct 14, 2021

   

   federicojasson

   on Oct 14, 2021

   Last edited by federicojasson

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   I'm having a similar issue when using the library in AWS Lambda, even though I installed the JWT extra (I downloaded the ZIP from Lambda and run it locally to double check):

   $ tree

   ...
   ├── boxsdk
   │   ├── auth
   │   │   ├── cooperatively_managed_oauth2.py
   │   │   ├── developer_token_auth.py
   │   │   ├── __init__.py
   │   │   ├── jwt_auth.py
   ...

   My suspicion is that there's actually a different ImportError being raised, but it's not getting logged anywhere:

   $ cat boxsdk/auth/__init__.py

   # coding: utf-8
   
   from __future__ import unicode_literals
   
   from .cooperatively_managed_oauth2 import CooperativelyManagedOAuth2
   from .developer_token_auth import DeveloperTokenAuth
   try:
       from .jwt_auth import JWTAuth
   except ImportError:
       JWTAuth = None  # If extras[jwt] are not installed, JWTAuth won't be available.

   Update: I was able to log the error and my suspicion was confirmed:

   Traceback (most recent call last):
   --
   File "/var/task/boxsdk/auth/__init__.py", line 8, in <module>
   from .jwt_auth import JWTAuth
   File "/var/task/boxsdk/auth/jwt_auth.py", line 12, in <module>
   from cryptography.hazmat.primitives import serialization
   File "/var/task/cryptography/hazmat/primitives/serialization/__init__.py", line 15, in <module>
   from cryptography.hazmat.primitives.serialization.base import (
   File "/var/task/cryptography/hazmat/primitives/serialization/base.py", line 11, in <module>
   from cryptography.hazmat.primitives.asymmetric.types import (
   File "/var/task/cryptography/hazmat/primitives/asymmetric/types.py", line 7, in <module>
   from cryptography.hazmat.primitives.asymmetric import (
   File "/var/task/cryptography/hazmat/primitives/asymmetric/dsa.py", line 12, in <module>
   from cryptography.hazmat.primitives.asymmetric import (
   File "/var/task/cryptography/hazmat/primitives/asymmetric/utils.py", line 6, in <module>
   from cryptography.hazmat.bindings._rust import asn1
   ImportError: /lib64/libc.so.6: version `GLIBC_2.18' not found (required by /var/task/cryptography/hazmat/bindings/_rust.abi3.so)

   Would be nice to log these errors instead of swallowing them:

   import logging
   
   ...
   try:
       from .jwt_auth import JWTAuth
   except ImportError:
       logging.exception("An import error occurred") # Could be a warning as well
       JWTAuth = None  # If extras[jwt] are not installed, JWTAuth won't be available.
   ...

   It could also capture the error and ignore it if the cause is that the JWTAuth class is actually not found, while raising the error otherwise. I'm not entirely sure if it would raise an error unnecessarily in scenarios in which the user doesn't care about one of the extra modules.
6. PJSimon

   unassigned

   PJSimon

   and

   sujaygarlanka

   on Jan 6, 2023
7. regoawt commented on Jul 3, 2023

   

   regoawt

   on Jul 3, 2023

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   I've just been hit with the same issue as @federicojasson - issue with cryptography bindings when deployed on AWS Lambda being swallowed and raised as AttributeError: 'NoneType' object has no attribute 'from_settings_dictionary'.

   Interestingly, the original error does get surfaced correctly when I import directly:

   from boxsdk.auth.jwtauth import JWTAuth
   

   rather than

   from boxsdk import JWTAuth
   

   🎉React with 🎉1Reacted by mharini
8. bvrs-atri commented on May 21, 2025

   

   bvrs-atri

   on May 21, 2025

   Last edited by bvrs-atri

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   Hi @regoawt, I'm facing the same issue when trying to use Boxsdk as a layer for Lambda Function.

   This is what i followed to create layer. AWS Docs

   I have tried installing only Boxsdk (without boxsdk[jwt]) and both of them at once as well. But i still see the issue

   [ERROR] AttributeError: 'NoneType' object has no attribute 'from_settings_dictionary'
   Traceback (most recent call last):
     File "/var/task/lambda_function.py", line 70, in lambda_handler
       auth = JWTAuth.from_settings_dictionary(json.loads(secret))
   

   Runtime : Python 3.11

   I've read in some articles that it's important where we build the package. So i've tried building it both it local pc and in the cloudshell as well. Yet the issue persists

   Anyway to solve this ?