krisgeus opened a new issue, #49499:
URL: https://github.com/apache/airflow/issues/49499

   ### Apache Airflow version
   
   3.0.0
   
   ### If "Other Airflow 2 version" selected, which one?
   
   _No response_
   
   ### What happened?
   
   Traceback (most recent call last):
     File 
"/home/airflow/.local/lib/python3.12/site-packages/airflow/serialization/serialized_objects.py",
 line 1066, in detect_task_dependencies
       from airflow.providers.standard.operators.trigger_dagrun import 
TriggerDagRunOperator
     File 
"/home/airflow/.local/lib/python3.12/site-packages/airflow/providers/standard/operators/trigger_dagrun.py",
 line 63, in <module>
       from airflow.exceptions import DagIsPaused
   ImportError: cannot import name 'DagIsPaused' from 'airflow.exceptions' 
(/home/airflow/.local/lib/python3.12/site-packages/airflow/exceptions.py)
   
   During handling of the above exception, another exception occurred:
   
   Traceback (most recent call last):
     File 
"/home/airflow/.local/lib/python3.12/site-packages/airflow/serialization/serialized_objects.py",
 line 1787, in to_dict
       json_dict = {"__version": cls.SERIALIZER_VERSION, "dag": 
cls.serialize_dag(var)}
                                                                
^^^^^^^^^^^^^^^^^^^^^^
     File 
"/home/airflow/.local/lib/python3.12/site-packages/airflow/serialization/serialized_objects.py",
 line 1696, in serialize_dag
       raise SerializationError(f"Failed to serialize DAG {dag.dag_id!r}: {e}")
   airflow.exceptions.SerializationError: Failed to serialize DAG 
'whirl-local-api-to-s3-example': cannot import name 'DagIsPaused' from 
'airflow.exceptions' 
(/home/airflow/.local/lib/python3.12/site-packages/airflow/exceptions.py)
   
   ### What you think should happen instead?
   
   DagIsPaused Exception should be evailable
   
   ### How to reproduce
   
   Startup 3.0.0rc4 with any dag
   
   ### Operating System
   
   OSX (Docker)
   
   ### Versions of Apache Airflow Providers
   
   pip freeze | grep apache-airflow-providers
   apache-airflow-providers-amazon==9.6.0
   apache-airflow-providers-celery==3.10.6
   apache-airflow-providers-cncf-kubernetes==10.4.2
   apache-airflow-providers-common-compat==1.6.0
   apache-airflow-providers-common-io==1.5.3
   apache-airflow-providers-common-messaging==1.0.0rc3
   apache-airflow-providers-common-sql==1.25.0
   apache-airflow-providers-docker==4.3.1
   apache-airflow-providers-elasticsearch==6.2.1
   apache-airflow-providers-fab @ 
file:///docker-context-files/apache_airflow_providers_fab-2.0.1rc0-py3-none-any.whl#sha256=aa23f05bffb1497cd7778569e9130466a06884335834654024499504a6024ae5
   apache-airflow-providers-ftp==3.12.3
   apache-airflow-providers-git @ 
file:///docker-context-files/apache_airflow_providers_git-0.0.2rc0-py3-none-any.whl#sha256=700eb56025686e47dba7be910b1e752fdcdd419dfd54e0e77a98bded39a3a2f6
   apache-airflow-providers-google==15.0.1
   apache-airflow-providers-grpc==3.7.3
   apache-airflow-providers-hashicorp==4.1.0
   apache-airflow-providers-http==5.2.1
   apache-airflow-providers-microsoft-azure==12.3.0
   apache-airflow-providers-mysql==6.2.1
   apache-airflow-providers-odbc==4.9.1
   apache-airflow-providers-openlineage @ 
file:///docker-context-files/apache_airflow_providers_openlineage-2.2.0rc0-py3-none-any.whl#sha256=9d15493974ae0a7a4c3828970dbf549a003311bf454c57998e72bf0a9f1261a7
   apache-airflow-providers-postgres==6.1.2
   apache-airflow-providers-redis==4.0.2
   apache-airflow-providers-sendgrid==4.0.1
   apache-airflow-providers-sftp==5.2.0
   apache-airflow-providers-slack==9.0.4
   apache-airflow-providers-smtp==2.0.2
   apache-airflow-providers-snowflake==6.2.1
   apache-airflow-providers-ssh==4.0.1
   apache-airflow-providers-standard @ 
file:///docker-context-files/apache_airflow_providers_standard-1.0.0rc0-py3-none-any.whl#sha256=2f477f01152930eba95305f199df355cb279c23d190b3160a42e28a68fd72bdb
   
   ### Deployment
   
   Other Docker-based deployment
   
   ### Deployment details
   
   _No response_
   
   ### Anything else?
   
   _No response_
   
   ### Are you willing to submit PR?
   
   - [ ] Yes I am willing to submit a PR!
   
   ### Code of Conduct
   
   - [x] I agree to follow this project's [Code of 
Conduct](https://github.com/apache/airflow/blob/main/CODE_OF_CONDUCT.md)
   


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