catkin make error missing files

[FPSychotic]

[ 56%] Building CXX object ego-planner-swarm/src/uav_simulator/Utils/multi_map_server/CMakeFiles/multi_map_visualization.dir/src/multi_map_visualization.cc.o
/home/oem/ego_ws/src/ego-planner-swarm/src/uav_simulator/Utils/multi_map_server/src/multi_map_visualization.cc:5:10: fatal error: multi_map_server/MultiOccupancyGrid.h: No such file or directory
5 | #include <multi_map_server/MultiOccupancyGrid.h>
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
compilation terminated.
make[2]: *** [ego-planner-swarm/src/uav_simulator/Utils/multi_map_server/CMakeFiles/multi_map_visualization.dir/build.make:63: ego-planner-swarm/src/uav_simulator/Utils/multi_map_server/CMakeFiles/multi_map_visualization.dir/src/multi_map_visualization.cc.o] Error 1
make[1]: *** [CMakeFiles/Makefile2:4588: ego-planner-swarm/src/uav_simulator/Utils/multi_map_server/CMakeFiles/multi_map_visualization.dir/all] Error 2
make: *** [Makefile:141: all] Error 2
Invoking "make -j1" failed

[Yuanzizizi]

The solution can be found in #46