Help. My modpack Is freezing

I have made this modpack on curseforge and it works fantasitc, but then all of a sudden I cant load into my world. I can go to the main menu and even start a new world, but whenever I try to open the world Ive been playing on it freezes after the reading world data screen, then shows the "openJdk platform binary has stopped responding".

I have already updated all mods, allocated more ram (8500m), and updated my drivers.

If anyone has any clue as what I could do to possibly fix this, I would love to hear it.