Cmake_module_path not found

edit

 CMake Error at rpg_vikit/vikit_common/CMakeLists.txt:26 (FIND_PACKAGE):
  By not providing "FindSophus.cmake" in CMAKE_MODULE_PATH this project has
  asked CMake to find a package configuration file provided by "Sophus", but
  CMake did not find one.

  Could not find a package configuration file provided by "Sophus" with any
  of the following names:

    SophusConfig.cmake
    sophus-config.cmake

  Add the installation prefix of "Sophus" to CMAKE_PREFIX_PATH or set
  "Sophus_DIR" to a directory containing one of the above files.  If "Sophus"
  provides a separate development package or SDK, be sure it has been
  installed.


-- Configuring incomplete, errors occurred!
See also "/home/btaher20/catkin_ws/build/CMakeFiles/CMakeOutput.log".
Invoking "cmake" failed

After that,I add

set(CMAKE_MODULE_PATH ${PROJECT_SOURCE_DIR})
find_package(Eigen3 REQUIRED)
include_directories(${EIGEN3_INCLUDE_DIR})

But still same error

How to solve it? Would you any body give link.