Re: [I] Error when opening Airflow - Something bad has happened. [airflow]

[via GitHub]

BAntonellini commented on issue #36560:
URL: https://github.com/apache/airflow/issues/36560#issuecomment-1876010822

   I've been experiencing a similar issue, can you check which version of 
`pendulum` is being installed?
   
   I use Airflow 2.3.1 and I see it asks for `pendulum>=2.0`
   ```
   Collecting pendulum>=2.0 (from apache-airflow==2.3.1)
     Downloading pendulum-3.0.0-cp38-cp38-macosx_11_0_arm64.whl.metadata (6.9 
kB)
   [...]
   pip list | grep pendulum
   pendulum                            3.0.0
   ```
   
   In certain test I instantiate the `DagBag` class to see if DAGs are OK, and 
Airflow settings' `TIMEZONE = pendulum.tz.timezone('UTC')` breaks when using 
Pendulum 3.0.0
   
   If that's the case, you must rollback to `pendulum 2.1.2`
   
   
![image](https://github.com/apache/airflow/assets/22618882/0fa4430c-c0f9-4275-aac9-b14dd1a23d0a)
   


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