As a start, ive been playing modpack alot, i must have more than 40 to 50 hours on my main save, with i having just reached precision mechanisms, and automated lava on my way for zinc machines, but on the way to acquire a blaze burner, i was exploring the nether on the search of nether fortress, but in the midst of this, suddendly my entire screen became complete gray, confused by this, i killed the instance and moved on with my day, but today, about 11 hours later, i attempt to run my instance on MMC but for some reason the world would not finish loading, instead stuck on 100% of the loading screen. When closing and retrying the instance, all the log gives me is this:

Couldn't extract native jar 'C:/Users/Win/Downloads/mmc-stable-win32/MultiMC/libraries/org/lwjgl/lwjgl-glfw/3.2.2/lwjgl-glfw-3.2.2-natives-windows.jar' to destination 'C:/Users/Win/Downloads/mmc-stable-win32/MultiMC/instances/Above-and-Beyond-1.1/natives' Couldn't extract native jar 'C:/Users/Win/Downloads/mmc-stable-win32/MultiMC/libraries/org/lwjgl/lwjgl-jemalloc/3.2.2/lwjgl-jemalloc-3.2.2-natives-windows.jar' to destination 'C:/Users/Win/Downloads/mmc-stable-win32/MultiMC/instances/Above-and-Beyond-1.1/natives' Couldn't extract native jar 'C:/Users/Win/Downloads/mmc-stable-win32/MultiMC/libraries/org/lwjgl/lwjgl-openal/3.2.2/lwjgl-openal-3.2.2-natives-windows.jar' to destination 'C:/Users/Win/Downloads/mmc-stable-win32/MultiMC/instances/Above-and-Beyond-1.1/natives' Couldn't extract native jar 'C:/Users/Win/Downloads/mmc-stable-win32/MultiMC/libraries/org/lwjgl/lwjgl-opengl/3.2.2/lwjgl-opengl-3.2.2-natives-windows.jar' to destination 'C:/Users/Win/Downloads/mmc-stable-win32/MultiMC/instances/Above-and-Beyond-1.1/natives' Couldn't extract native jar 'C:/Users/Win/Downloads/mmc-stable-win32/MultiMC/libraries/org/lwjgl/lwjgl-stb/3.2.2/lwjgl-stb-3.2.2-natives-windows.jar' to destination 'C:/Users/Win/Downloads/mmc-stable-win32/MultiMC/instances/Above-and-Beyond-1.1/natives' Couldn't extract native jar 'C:/Users/Win/Downloads/mmc-stable-win32/MultiMC/libraries/org/lwjgl/lwjgl/3.2.2/lwjgl-3.2.2-natives-windows.jar' to destination 'C:/Users/Win/Downloads/mmc-stable-win32/MultiMC/instances/Above-and-Beyond-1.1/natives' Couldn't extract native jar 'C:/Users/Win/Downloads/mmc-stable-win32/MultiMC/libraries/com/mojang/text2speech/1.11.3/text2speech-1.11.3-natives-windows.jar' to destination 'C:/Users/Win/Downloads/mmc-stable-win32/MultiMC/instances/Above-and-Beyond-1.1/natives'

If needed, i am able to provide the files for the whole crash log.