How do I fix this never ending error?

[KevM3333]

I'm sorry, but an uncaught exception occurred.

While running game code:
File "renpy/common/00start.rpy", line 188, in script call
call _gl_test
File "renpy/common/00gltest.rpy", line 361, in script
$ __gl_test()
File "renpy/common/00gltest.rpy", line 361, in
$ __gl_test()
File "renpy/common/00gltest.rpy", line 287, in _m1_00gltest__gl_test
_gl_performance_test()
File "renpy/common/00gltest.rpy", line 304, in _gl_performance_test
ui.interact(suppress_underlay=True, suppress_overlay=True)
IOError: Couldn't find file 'gui/window_icon.png'.

-- Full Traceback ------------------------------------------------------------

Full traceback:
File "C:\Users\ASUS\Desktop\DDLC-1.1.1-pc - Copy\renpy\bootstrap.py", line 295, in bootstrap
renpy.main.main()
File "C:\Users\ASUS\Desktop\DDLC-1.1.1-pc - Copy\renpy\main.py", line 487, in main
run(restart)
File "C:\Users\ASUS\Desktop\DDLC-1.1.1-pc - Copy\renpy\main.py", line 147, in run
renpy.execution.run_context(True)
File "C:\Users\ASUS\Desktop\DDLC-1.1.1-pc - Copy\renpy\execution.py", line 761, in run_context
context.run()
File "renpy/common/00start.rpy", line 188, in script call
call _gl_test
File "renpy/common/00gltest.rpy", line 361, in script
$ __gl_test()
File "C:\Users\ASUS\Desktop\DDLC-1.1.1-pc - Copy\renpy\ast.py", line 814, in execute
renpy.python.py_exec_bytecode(self.code.bytecode, self.hide, store=self.store)
File "C:\Users\ASUS\Desktop\DDLC-1.1.1-pc - Copy\renpy\python.py", line 1719, in py_exec_bytecode
exec bytecode in globals, locals
File "renpy/common/00gltest.rpy", line 361, in
$ __gl_test()
File "renpy/common/00gltest.rpy", line 287, in _m1_00gltest__gl_test
_gl_performance_test()
File "renpy/common/00gltest.rpy", line 304, in _gl_performance_test
ui.interact(suppress_underlay=True, suppress_overlay=True)
File "C:\Users\ASUS\Desktop\DDLC-1.1.1-pc - Copy\renpy\ui.py", line 285, in interact
rv = renpy.game.interface.interact(roll_forward=roll_forward, **kwargs)
File "C:\Users\ASUS\Desktop\DDLC-1.1.1-pc - Copy\renpy\display\core.py", line 2494, in interact
self.start()
File "C:\Users\ASUS\Desktop\DDLC-1.1.1-pc - Copy\renpy\display\core.py", line 1686, in start
self.set_mode()
File "C:\Users\ASUS\Desktop\DDLC-1.1.1-pc - Copy\renpy\display\core.py", line 1916, in set_mode
if draw.set_mode(virtual_size, physical_size, fullscreen):
File "renpy/gl/gldraw.pyx", line 192, in renpy.gl.gldraw.GLDraw.set_mode (gen\renpy.gl.gldraw.c:2802)
renpy.display.interface.post_init()
File "C:\Users\ASUS\Desktop\DDLC-1.1.1-pc - Copy\renpy\display\core.py", line 1717, in post_init
self.set_icon()
File "C:\Users\ASUS\Desktop\DDLC-1.1.1-pc - Copy\renpy\display\core.py", line 1748, in set_icon
renpy.loader.load(icon),
File "C:\Users\ASUS\Desktop\DDLC-1.1.1-pc - Copy\renpy\loader.py", line 543, in load
raise IOError("Couldn't find file '%s'." % name)

it says it can't find some png file, is that mean i need some picture or something?