Mods:
https://mods.factorio.com/mod/basic_cannon_turret
https://mods.factorio.com/mod/heavy_cannon_turret // has exactly the same crash
Not sure why Maraxis is present in the trace. (It is enabled too)
Failed to load mods: Error while loading entity prototype "cannon-turret" (ammo-turret): In circuit connector definitions expected table of 8 elements but 1 were given
Modifications: Basic Cannon Turret › Ammo turrets have circuit connectors › Maraxsis