[ERROR] colcon build --symlink-install --packages-select grasp_msgs moveit_msgs grasp_ros2

[mattijsk14]

When building the grasp library, this step. An error occurred:

colcon build --symlink-install --packages-select grasp_msgs moveit_msgs grasp_ros2
Starting >>> grasp_msgs
Starting >>> moveit_msgs
Finished <<< grasp_msgs [0.64s]
Finished <<< moveit_msgs [0.80s]
Starting >>> grasp_ros2
--- stderr: grasp_ros2
CMake Error at CMakeLists.txt:36 (find_package):
By not providing "Findament_cmake.cmake" in CMAKE_MODULE_PATH this project
has asked CMake to find a package configuration file provided by
"ament_cmake", but CMake did not find one.

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

ament_cmakeConfig.cmake
ament_cmake-config.cmake

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

---

Failed <<< grasp_ros2 [0.08s, exited with code 1]

Summary: 2 packages finished [1.29s]
1 package failed: grasp_ros2
1 package had stderr output: grasp_ros2

Does someone know how to fix this????
Thanks a lot!