okay.. ';D i did my good old technique of troubleshooting modpack (disabling ALL the mods and gradually in parts enabbling them and lauching game, enabling more mods, launching e.t.c) and managed to narrow it down to one mod.... it was "better smithing table" causing all the errors and making several mods to spit errors..
Same way by FIRSTLY turning on "better smithing tables" and seeing which mods it clashed with was: "Doggy Tallents Next" "bartering station" "Curios API"
And further i wasn't able to check what mods conflicted b'cuz it was like: it was working with X mods, enabled 10 more mods, crashed. procedurally disabled all of them and still was crashing, disabled some more mods, worked. enabled back mods with which it was crashing and now it wasn't i can't understand why and what mods are bad but i'm happy i somehow got the main error causer which again was "better smithing table".
Without that mod everything works just fine.
SOLVED (?)