Unsupported astro:env getSecret

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:::caution[Deprecated] This error is from an older version of Astro and is no longer in use. If you are unable to upgrade your project to a more recent version, then you can consult unmaintained snapshots of older documentation for assistance. :::

EnvUnsupportedGetSecret: astro:env/server exported function getSecret is not supported by your adapter.

What went wrong?

The astro:env/server exported function getSecret() is not supported by your adapter.