opengl crash

opengl crash

λupdate
λ2017-07-01 14:24:07.809 ghc[72296:17632659] *** Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason: 'nextEventMatchingMask should only be called from the Main Thread!'
*** First throw call stack:
(
	0   CoreFoundation                      0x00007fffa3ae12cb __exceptionPreprocess + 171
	1   libobjc.A.dylib                     0x00007fffb88ec48d objc_exception_throw + 48
	2   AppKit                              0x00007fffa1ccde82 -[NSApplication(NSEvent) _nextEventMatchingEventMask:untilDate:inMode:dequeue:] + 4480
	3   libSDL2-2.0.0.dylib                 0x0000000114df652c Cocoa_PumpEvents + 247
	4   libSDL2-2.0.0.dylib                 0x0000000114d942b8 SDL_PumpEvents_REAL + 23
	5   libSDL2-2.0.0.dylib                 0x0000000114d94320 SDL_WaitEventTimeout_REAL + 57
	6   libHSsdl2-2.2.0-AtqINIQwRt16sI3ojT5xyW-ghc8.0.2.dylib 0x000000011449fb95 c92Dx_info + 117
)
libc++abi.dylib: terminating with uncaught exception of type NSException