Collection does not exist

import DontEditWarning from '~/components/DontEditWarning.astro'

<DontEditWarning />

:::caution[Deprecated] Collections that do not exist no longer result in an error. A warning is given instead. :::

A collection queried via getCollection() does not exist.

What went wrong?

When querying a collection, ensure a collection directory with the requested name exists under src/content/.