CLion is not working after mac os updated

I just updated macOs to macOs Catalina 10.15.6. Then I got these ERROR from CLION

CMake Error at CMakeLists.txt:2 (project):
  The CMAKE_C_COMPILER:

    /Library/Developer/CommandLineTools/usr/bin/cc

  is not a full path to an existing compiler tool.

  Tell CMake where to find the compiler by setting either the environment
  variable "CC" or the CMake cache entry CMAKE_C_COMPILER to the full path to
  the compiler, or to the compiler name if it is in the PATH.


CMake Error at CMakeLists.txt:2 (project):
  The CMAKE_CXX_COMPILER:

    /Library/Developer/CommandLineTools/usr/bin/c++

  is not a full path to an existing compiler tool.

  Tell CMake where to find the compiler by setting either the environment
  variable "CXX" or the CMake cache entry CMAKE_CXX_COMPILER to the full path
  to the compiler, or to the compiler name if it is in the PATH.


-- Configuring incomplete, errors occurred!
See also "/Users/xxx/Documents/GitHub/private-bustub/cmake-build-debug/CMakeFiles/CMakeOutput.log".
Cannot read /Users/xxx/Documents/GitHub/private-bustub/cmake-build-debug/CMakeFiles/3.14.5/CMakeCCompiler.cmake
Cannot read /Users/xxx/Documents/GitHub/private-bustub/cmake-build-debug/CMakeFiles/3.14.5/CMakeCXXCompiler.cmake


Cannot get compiler information:
    Cannot run program "/Library/Developer/CommandLineTools/usr/bin/c++" (in directory "/Users/xxx/Documents/GitHub/private-bustub/cmake-build-debug/googletest-build/googlemock"): error=2, No such file or directory