in response to http://127.0.0.1.6969/client/items: error converting value {null} to type 'EFT.MongoID'. path 'grids[1]._props.filters[0]'. line 1, position 171665962

i screwed around the mods a bit and something weirdly worked. i removed all the mods in user folder and launched the game. it got to the menu with no errors then reinstalled all the previous mods excluding the sptarkovammocases mentioned in my description and the game ran fine again.
lesson learned