error in building dependency DBoW2

[mgrallos]

Description: Trying to implement a visual SLAM and DBoW2 is a dependency

Command:

 catkin build 

Console output:

CMake Error at /home/mariah/tello_ws1/src/openvslam/ros/src/openvslam/CMakeLists.txt:202 (find_package):
  By not providing "FindDBoW2.cmake" in CMAKE_MODULE_PATH this project has
  asked CMake to find a package configuration file provided by "DBoW2", but
  CMake did not find one.

  Could not find a package configuration file provided by "DBoW2" with any of
  the following names:

    DBoW2Config.cmake
    dbow2-config.cmake

  Add the installation prefix of "DBoW2" to CMAKE_PREFIX_PATH or set
  "DBoW2_DIR" to a directory containing one of the above files.  If "DBoW2"
  provides a separate development package or SDK, be sure it has been
  installed.

Additional files: Please attach all the files needed to reproduce the error.

Please give also the following information:

• Kimera-Vio branch, tag or commit used
• GTSAM version used: no idea
• OpenGV version used: I have no idea
• OpenCV version used: type opencv_version 4.2.0
• Operating system and version (e.g. Ubuntu 16.04 or Windows 10): Ubuntu 20
• Did you change the source code? (yes / no): no

[marcusabate]

Make sure to install DBow2, refer to the installation instructions in the docs.