Failed to load mods: buoyant-spidertrons/data-updates.lua:74: attempt to index field 'graphics_set' (a nil value)
stack traceback:
buoyant-spidertrons/data-updates.lua:74: in function 'create_jesus_spidertron'
buoyant-spidertrons/data-updates.lua:90: in main chunk

Mods to be disabled:
• buoyant-spidertrons (1.0.1)

Do you have mods adding custom spidertrons?

I have Early Spidertrons and Spidertron Automation installed

I can't reproduce, but the graphics_set field is marked as nullable, so added a check for it. In the worst case there will be no visual for the buoy equipped.