hi @louiswalch
can you paste the code for the add_local_field_group
?
on a side note, if you’re just wanting to have your fields defined via your theme, instead of the database, i would look into the ACF Local JSON: https://www.advancedcustomfields.com/resources/local-json/
It makes things a bit simpler ^. Just remember to sync the fields on your staging/production apps before pulling down your database.
Phil