Failed to load mods: prismatic-quality/data-updates.lua:23: attempt to index field 'legendary-quality' (a nil value)
stack traceback:
prismatic-quality/data-updates.lua:23: in main chunk

Mods to be disabled:
• prismatic-quality (0.0.8)

This looks to be an issue if any mod removes the legendary quality

This is an issue with Quality Assurance, my mod. Please only add new prototypes (such as technologies which depend on epic-quality and legendary-quality) in your data.lua file, and change prototypes in the rest of the mod.