glut rumtime error

OpenGL OpenGL: Basic Coding
1

Hello! Does anybody know what could be causing this
runtime error ;

freeglut_window.c:300: fgOpenWindow:
> Assertion 'window->Window.VisualInfo != ((void *)0)'

//longhey

2

Aha

It was the computer’s software
When I changed computer it all worked

//longhey