CMake Error at /opt/ros/melodic/share/catkin/cmake/catkinConfig.cmake:83 (find_package): Could not find a package configuration file provided by "rospy" with any of the following names: rospyConfig.cmake rospy-config.cmake Add the installation prefix of "rospy" to CMAKE_PREFIX_PATH or set "rospy_DIR" to a directory containing one of the above files. If "rospy" provides a separate development package or SDK, be sure it has been installed.

这个错误提示是因为在你的 `CMakeLists.txt` 文件中使用了 `find_package` 命令来查找 `rospy` 包，但是 CMake 找不到相应的配置文件。你需要确保已经安装了 `rospy` 包，或者在 `CMakeLists.txt` 中设置正确的路径。你可以尝试在终端中运行以下命令来安装 `rospy`：

sudo apt-get install python-rospy

如果你已经安装了 `rospy`，你需要将其路径添加到 `CMAKE_PREFIX_PATH` 中，或者设置 `rospy_DIR` 变量指向包含 `rospyConfig.cmake` 或 `rospy-config.cmake` 文件的目录。