[GitHub] [airflow] danarwix edited a comment on issue #14136: DAG not found in serialized table

[GitBox <gi...@apache.org>]

danarwix edited a comment on issue #14136:
URL: https://github.com/apache/airflow/issues/14136#issuecomment-795054145


   Hi, 
   Just got the same error while performing the astronomer certification.
   
   steps to reproduce:
   
   1. install the astronomer [cli ](https://www.astronomer.io/docs/cloud/stable/develop/cli-quickstart)
   2. open a terminal
   3. run: `mkdir <your directory name>`
   4. run: `astro dev init`
   5. open the `Dockerfile` and replace its content with ```bash FROM quay.io/astronomer/ap-airflow:2.0.0-2-buster-onbuild```
   6. open the airflow UI at `http:// localhost:8080`
   7. open the `example_dag`
   
   expected result:
   the DAG should be visible
   
   actual result:
   The following error is shown:
   ```python
   Traceback (most recent call last):
   File “/usr/local/lib/python3.7/site-packages/flask/app.py”, line 2447, in wsgi_app
   response = self.full_dispatch_request()
   File “/usr/local/lib/python3.7/site-packages/flask/app.py”, line 1952, in full_dispatch_request
   rv = self.handle_user_exception(e)
   File “/usr/local/lib/python3.7/site-packages/flask/app.py”, line 1821, in handle_user_exception
   reraise(exc_type, exc_value, tb)
   File “/usr/local/lib/python3.7/site-packages/flask/_compat.py”, line 39, in reraise
   raise value
   File “/usr/local/lib/python3.7/site-packages/flask/app.py”, line 1950, in full_dispatch_request
   rv = self.dispatch_request()
   File “/usr/local/lib/python3.7/site-packages/flask/app.py”, line 1936, in dispatch_request
   return self.view_functionsrule.endpoint
   File “/usr/local/lib/python3.7/site-packages/airflow/www/auth.py”, line 34, in decorated
   return func(*args, **kwargs)
   File “/usr/local/lib/python3.7/site-packages/airflow/www/decorators.py”, line 97, in view_func
   return f(*args, **kwargs)
   File “/usr/local/lib/python3.7/site-packages/airflow/www/decorators.py”, line 60, in wrapper
   return f(*args, **kwargs)
   File “/usr/local/lib/python3.7/site-packages/airflow/www/views.py”, line 1861, in tree
   dag = current_app.dag_bag.get_dag(dag_id)
   File “/usr/local/lib/python3.7/site-packages/airflow/utils/session.py”, line 65, in wrapper
   return func(*args, session=session, **kwargs)
   File “/usr/local/lib/python3.7/site-packages/airflow/models/dagbag.py”, line 171, in get_dag
   self._add_dag_from_db(dag_id=dag_id, session=session)
   File “/usr/local/lib/python3.7/site-packages/airflow/models/dagbag.py”, line 227, in _add_dag_from_db
   raise SerializedDagNotFound(f"DAG ‘{dag_id}’ not found in serialized_dag table")
   airflow.exceptions.SerializedDagNotFound: DAG ‘example_dag’ not found in serialized_dag table
   
   ```
   
   @eladkal 


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