Under which category would you file this issue?

Airflow Core

Apache Airflow version

3.2.0

What happened and how to reproduce it?

I can't see anymore the UI but the api-server is still running

open a dag with tasks no more present on the code dag

click on the existing tasks of the dag

then click on the name of a task no more present ( not on the grid box of a previous execution ) then the UI fail and api-server will never answer back and after around 3/4 minutes the api-server logs will show errors but still not answering

api_serser.log

Only restarting manually the api-server correct the situation

Versions of Apache Airflow Providers

apache-airflow-providers-postgres==6.6.2
apache-airflow-providers-celery==3.17.2
apache-airflow-providers-redis==4.4.3
apache-airflow-providers-docker==4.5.4
apache-airflow-providers-cncf-kubernetes==10.15.0
apache-airflow-providers-http==6.0.1
apache-airflow-providers-common-sql==1.34.0
apache-airflow-providers-standard==1.12.2
apache-airflow-providers-fab==3.6.0
apache-airflow-providers-apache-spark==6.0.0
apache-airflow-providers-common-compat==1.14.2

Are you willing to submit PR?

• Yes I am willing to submit a PR!

Code of Conduct

• I agree to follow this project's Code of Conduct