How to empty the language_cache to reload from libretranslate

I tried to install libretranslate, but the first time it failed to download all the language modules and I had to run the script again to try to download the modules. The problem is that now only a few of the languages show up in the 'Override Source Language" drop down list which correspond to the point when it failed the first time.

I checked the code, and I found this:

But I couldn’t find out where to reset or reload this cache to have it populate the languages properly.

Is there a way to clear the language_cache and have it repopulate it?

Not a Elixir dev, but AFAIK cachex is an in-memory, non-persistent cache.

Thank you. I was afraid to just do a reboot, but that did seem to resolve the issue. Thank you.