It seems like it is unable to completely clone the required files from the link ,PlutoPilot.h in this regard
Here is the error :
[ 7%] Building CXX object pluto-ros-package/plutodrone/CMakeFiles/plutoswarm.dir/src/PlutoSwarm.cpp.o
/home/maha/catkin_ws/src/pluto-ros-package/plutodrone/src/PlutoSwarm.cpp:3:35: fatal error: plutodrone/PlutoPilot.h: No such file or directory
compilation terminated.
–request to solve the issue with installation