Almost impossible to say without knowing how all the mods you are using work together, but its clearly a mod. The only way to know which one is to add them one by one in single player until you find the offender, and that doesnt even rule out a mod conflict… which leaves the option of a “bubble sort” of a kind… remove half, see if it crashes, if not, remove the other half and add the prior half until you whittle it down to the offending mod/mods. The hazard of using so many mods I’m afraid…