r39132 closed pull request #3897: [AIRFLOW-2263] Fix 500 for null DAG
URL: https://github.com/apache/incubator-airflow/pull/3897
This is a PR merged from a forked repository.
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diff --git a/airflow/www/views.py b/airflow/www/views.py
index aa2530e458..7e79c0df7f 100644
--- a/airflow/www/views.py
+++ b/airflow/www/views.py
@@ -1379,6 +1379,8 @@ def tree(self, session=None):
dag_id = request.args.get('dag_id')
blur = conf.getboolean('webserver', 'demo_mode')
dag = dagbag.get_dag(dag_id)
+ if dag is None:
+ abort(404)
if dag_id not in dagbag.dags:
flash('DAG "{0}" seems to be missing.'.format(dag_id), "error")
return redirect('/admin/')
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