nadflinn opened a new pull request #8389: [Issue-8388] Handle no dagrun in DagrunIdDep URL: https://github.com/apache/airflow/pull/8389 Issue: https://github.com/apache/airflow/issues/8388 Summary: If a dag has not been turned on and/or never been run (i.e. no dagruns associated with this DAG) and you click on that DAG in the admin page, click on a task in the DAG graph, and then click on `Task Instance Details` you get the "Ooops" explosion error page. The reason is `DagrunIdDep` expects a dagrun to exist. This PR adds a check to make sure a dagrun exists. --- Make sure to mark the boxes below before creating PR: [x] - [x] Description above provides context of the change - [x] Unit tests coverage for changes (not needed for documentation changes) - [x] Commits follow "[How to write a good git commit message](http://chris.beams.io/posts/git-commit/)" - [ ] Relevant documentation is updated including usage instructions. - [x] I will engage committers as explained in [Contribution Workflow Example](https://github.com/apache/airflow/blob/master/CONTRIBUTING.rst#contribution-workflow-example). --- In case of fundamental code change, Airflow Improvement Proposal ([AIP](https://cwiki.apache.org/confluence/display/AIRFLOW/Airflow+Improvements+Proposals)) is needed. In case of a new dependency, check compliance with the [ASF 3rd Party License Policy](https://www.apache.org/legal/resolved.html#category-x). In case of backwards incompatible changes please leave a note in [UPDATING.md](https://github.com/apache/airflow/blob/master/UPDATING.md). Read the [Pull Request Guidelines](https://github.com/apache/airflow/blob/master/CONTRIBUTING.rst#pull-request-guidelines) for more information.
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