It seems solar productivity has a complaint about an entity not existing
Failed to Load mods: Error in assignID: entity with name 'sp-1-' does not exist.
Source: sp-1-bi-bio-farm-hidden-panel (solar-panel).
notice this is for the updated fork of bio industries not the original mod that (as far as I am aware) does not work anymore on the current version of rimworld
https://mods.factorio.com/mod/Bio_Industries_2
