My game is crashing

[AlextheBoxShark 0]

My game keeps crashing whenever i open a world i was in a world then pressed c and my game crashed so i went in another world and my game crashed instantly how do i make it stop crashing?

Version of minecraft 1.8.9

Version of Forge 1.8.9

version of Advanced capes mod 1.8.9

Edited May 10 by AlextheBoxShark

[W_ii 0]

i have the same problem, when i press C, GUI Doesn't show up and just crashes

[PandaMarioYT 0]

Also me