[edjalmo]

Here they not show, but I'm getting errors with this plugin. I started Kodi, open a movie with Mads Mikkelsen and click on him, check if my logs say something: https://pastebin.com/HqUE7LZa

I don't see any errors in that log? Where are the errors?

What is your language setting in TMDbHelper?

It is possible that your simplecache.db became corrupted or when the info was cached there wasn't a bio available for some reason.
You can try deleting simplecache.db whilst kodi is closed from:
userdata/addon_data/script.module.simplecache/simplecache.db

I only recommend deleting simplecache.db as a last resort, because it is used by multiple plugins/script and will cause cache refreshes for all of them.

I need to add a cache refresh function for a specific entry in my plugin so that doing the above is not necessary.  

I can see erros when I click for search people in add-on or popular people. The search for movies and tv show work. Check logs with I doing this: https://pastebin.com/Smf3ptaE

I use Portuguese Brazil language in add-on. I checked Mads Mikkelsen page in TMDb and not exist portuguese Brazil translation of his biography. I changed add-on language to English (EUA) and still not seeing his biography, but his movies titles still show with portuguese Brazil titles, so I imagine that they're cached. You use english as a fallback language if not exist infos in user language? Maybe this is the problem...