GLSL 4.50 is not supported.

This error message means that your graphics card or driver does not support the GLSL 4.50 version. GLSL stands for OpenGL Shading Language, which is a programming language used to create shaders for rendering graphics in OpenGL applications.

To fix this issue, you can try updating your graphics card driver to the latest version. If your graphics card is too old to support GLSL 4.50, you may need to upgrade to a newer card that supports the required version. Alternatively, you can try modifying your shader code to use an earlier version of GLSL that is supported by your graphics card.

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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.