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?