glfw.GLFWError: (65544) b'Cocoa: Failed to retrieve display name'
in mac 10.13.6 (17G65)
![image](https://user-images.githubusercontent.com/15347911/43376066-526ba998-93eb-11e8-927c-1325b79bfeac.png)

I find the same error 
https://github.com/glfw/glfw/issues/958
