Hi! Thanks for the update!
Unfortunately, it seems like this mod is imcompatible with K2arsenal :c
https://mods.factorio.com/mod/eRisel-k2-arsenal
My best guess is that they reuse/recicle code from a mod that adds the cds-cannon-turret prototype, and they force the removal of that, and your mod might make some kind of checks that make the game crash since the game no longer has that prototype, or something like that. Sorry, I feel like I only come here to be a chore for you haha.
Failed to load mods: Error in assignID: entity with name 'cds-cannon-turret' does not exist. It was removed by eRisel-k2-arsenal.
At ROOT.ammo-turret.rangetech-var-cds-cannon-turret-1.factoriopedia_alternative
Source: rangetech-var-cds-cannon-turret-1 (ammo-turret).