happy21145

Hello this is my first post on anything like this but i dont know what to do but ask here i upgraded to skyrim special edition around a week ago and started to play with some mods not too many since i wanted to just play and i was enjoying it but then when i arrived at skuldafn i make it all the way to end near the portal to svongrade and kill the dragon priest and taking his staff and placeing it to open the portal and it makes the really high sound and just closes the game with no warning no crash reports ill be adding my modlist aswell for more information but i have no idea what could be causing this