VST Sound Library missing, What To Do?

I updated to Groove Agent 5, and erased some libraries by accident. So every time I load Halion 6 I get a bunch of warnings (please have a look at the attachments).

How can I resolve this? Can I DL those files somewhere? Can I live without them?
ANY HELP much appreciated!
Skærmbillede 2019-04-01 12.55.37.png
Skærmbillede 2019-04-01 12.55.55.png

Did you try using the Steinberg Download Assistant to download the files again?

You can’t specify those files in the dl manager.