CMake Error: Kokkos requires C++20 or newer but requested 17

[ajchowdhury000-cyber]

I was trying to install PhasicFlow in Ubuntu and I came across this:

CMake Error at /home/user/Kokkos/kokkos/cmake/kokkos_test_cxx_std.cmake:89 (message):
Kokkos requires C++20 or newer but requested 17!
Call Stack (most recent call first):
/home/user/Kokkos/kokkos/cmake/kokkos_tribits.cmake:162 (include)
/home/user/Kokkos/kokkos/CMakeLists.txt:225 (kokkos_setup_build_environment)

How can I fix this?