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Issue description

You say explicitly in the course text "The backup must include only the resources with those labels." (app.kubernetes.io/part-of=mediawiki, app.kubernetes.io/name: mediawiki and app.kubernetes.io/name: postgresql) - but in the example solution you still expect the student to add the namespace label "kubernetes.io/metadata.name=wiki".

Steps to reproduce:

Workaround:

Expected result: