Power configuration change fails with <image> is not a valid distro series error

[Alan Baghumian]

Hello MAAS Team!

Our client & I encountered an interesting issue where power configuration modification attempts fails with an error, if the image that a given machine was deployed with has been deleted (Please see the attached screen shot).

Steps to reproduce:

1. Pick a machine and deploy it using a given image.

2. Go ahead and remove the image from MAAS.

3. Go back to the deployed machine, under power configuration and try to make a change or just save the existing information.

4. It fails with the error shown on the subject of this bug report and the attached screen shot.

This blocks us from properly releasing deployed machines if the IPMI information has changed and needs modification.

Please let me know if you need additional details or anything else to test.

We are using MAAS 3.3.4 & 3.3.5 Snaps.

Thanks much,
Alan