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I keep receiving an "Internal Server Error" redirect when I click the "Open Airflow UI" link in the Amazon MWAA console; it’s just a blank white screen with "Internal Server Error" in big black text. I was being successfully redirected to the Airflow UI when I set up the environment, but it appeared to break overnight. It then started working again yesterday, then broke again today overnight.

Please let me know if I can provide further details–thank you!

I have tried and confirmed the following:

  • Region is correct with us-west-2
  • Logging in and back out as root user with access to everything
  • VPC setup and permissions are the same as when the Open Airflow UI was successfully redirecting me
  • VPC setup is with the standard AWS Cloudformation template that is provided during MWAA setup
  • A token is provided after the login = true portion of the URL redirect
  • Maintenance window is set as 7 AM UTC, Sunday, so it shouldn’t be occurring now

I expect to be redirected to the Airflow UI successfully.

2

Answers


  1. This is a bug that I expect to be fixed fairly quickly. As a workaround you can delete your browser’s cookie whose name corresponds to your Airflow UI link, refresh, and you’re good to go.

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  2. It is a known issue of MWAA. I am unsure what is the root cause of it, but I’ve seen this issue for a while. I am using MWAA Airflow 2.4.3. It happened when I tried to access MWAA Airflow UI the day after I deployed it.

    You have to delete the cookie. I’ll use Chrome to demonstrate it.

    Open the Chrome Developer Tools and click Application then Cookie:
    enter image description here
    Click session and delete the value.

    Now go back to AWS console MWAA environment page and click the Open Airflow UI button again, you should be able to access Airflow UI.

    Hope this helps.

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