How to solve UserPercept.h in hector_quadrotor?

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Hi there,

I was following the instructions for installing hector_quadrotor, but when i clik catkin_make, i get this message and i dont know how to solve this, i searched the net for this file UserPercept.h, but i didnt find it, i only found the msg file, but i dont know how to solve this problem, so my catkin_make proceed correctly.

[ 97%] Linking CXX executable /home/fuad/catkin_ws/devel/lib/hector_quadrotor_teleop/quadrotor_teleop
[ 97%] Built target quadrotor_teleop
[ 97%] Building CXX object hector_worldmodel_urdf_import/CMakeFiles/hector_worldmodel_urdf_import.dir/src/worldmodel_urdf_import.cpp.o
/home/fuad/catkin_ws/src/hector_worldmodel_urdf_import/src/worldmodel_urdf_import.cpp:5:48: fatal error: hector_worldmodel_msgs/UserPercept.h: No such file or directory
compilation terminated.
hector_worldmodel_urdf_import/CMakeFiles/hector_worldmodel_urdf_import.dir/build.make:62: recipe for target 'hector_worldmodel_urdf_import/CMakeFiles/hector_worldmodel_urdf_import.dir/src/worldmodel_urdf_import.cpp.o' failed
make[2]: *** [hector_worldmodel_urdf_import/CMakeFiles/hector_worldmodel_urdf_import.dir/src/worldmodel_urdf_import.cpp.o] Error 1
CMakeFiles/Makefile2:14255: recipe for target 'hector_worldmodel_urdf_import/CMakeFiles/hector_worldmodel_urdf_import.dir/all' failed
make[1]: *** [hector_worldmodel_urdf_import/CMakeFiles/hector_worldmodel_urdf_import.dir/all] Error 2
Makefile:138: recipe for target 'all' failed
make: *** [all] Error 2
Invoking "make -j1" failed