Why does it give an error when accessing GLEW?

Question

C++ / C#

Hello. Please help me understand why GLEW does not work.
In general, I include glew and glfw.
GLFW connects and works fine, I compile the project via makefile.
BUT, if I try to check if glew is running, the project will compile, but on startup it will throw an error - Segmentation fault: 11
I tried to google the answer both here and on stackoverflow...

Answer 1

Before GLEW is initialized, an OpenGL context must be created .