how to fix this error: GLSL 4.50 is not supported?

GLSL 4.50 is a version of the OpenGL Shading Language that is not supported by your graphics card or driver. To fix this error, you have a few options:

1. Update your graphics card driver to the latest version that supports GLSL 4.50.
2. Use a different version of GLSL that is supported by your graphics card. You can check which versions are supported by your card in the OpenGL specification.
3. If you are developing a program, you can add a check for the GLSL version and provide fallback code for older versions that don't support GLSL 4.50.

Keep in mind that if your graphics card or driver doesn't support a specific version of GLSL, you may not be able to use certain features or effects in your program.