It is because of the new rendering engine implemented in versions 1.16.200 and higher, it breaks most shaders and texture packs using and modifying glsl and hlsl code, night vision texture packs modify the gamma value to always be at the highest using hlsl therefore your pack isn't working.
If you wish to use this texture pack, you can do so by downgrading minecraft to 1.16.100 (a tutorial for the same can be found on youtube).
Prathpro17
It is because of the new rendering engine implemented in versions 1.16.200 and higher, it breaks most shaders and texture packs using and modifying glsl and hlsl code, night vision texture packs modify the gamma value to always be at the highest using hlsl therefore your pack isn't working.
If you wish to use this texture pack, you can do so by downgrading minecraft to 1.16.100 (a tutorial for the same can be found on youtube).