After downloading the hector_gazebo file to the catkin_ws / src file directory, I get the following error when I make catkin_make in the catkin_ws file directory.how can i solve this problem? Can you help me ?

[1617rosengineer]

CMakeFiles/Makefile2:13101: recipe for target 'hector_gazebo-melodic-devel/hector_gazebo_plugins/CMakeFiles/hector_gazebo_ros_imu.dir/all' failed
make[1]: *** [hector_gazebo-melodic-devel/hector_gazebo_plugins/CMakeFiles/hector_gazebo_ros_imu.dir/all] Error 2
/usr/bin/ld: cannot find -lSWSCALE::SWSCALE
/usr/bin/ld: cannot find -lAVFORMAT::AVFORMAT
/usr/bin/ld: cannot find -lAVCODEC::AVCODEC
collect2: error: ld returned 1 exit status
hector_gazebo-melodic-devel/hector_gazebo_plugins/CMakeFiles/hector_gazebo_ros_gps.dir/build.make:235: recipe for target '/home/cansel/catkin_wss/devel/lib/libhector_gazebo_ros_gps.so' failed
make[2]: *** [/home/cansel/catkin_wss/devel/lib/libhector_gazebo_ros_gps.so] Error 1
CMakeFiles/Makefile2:13061: recipe for target 'hector_gazebo-melodic-devel/hector_gazebo_plugins/CMakeFiles/hector_gazebo_ros_gps.dir/all' failed
make[1]: *** [hector_gazebo-melodic-devel/hector_gazebo_plugins/CMakeFiles/hector_gazebo_ros_gps.dir/all] Error 2
Makefile:140: recipe for target 'all' failed
make: *** [all] Error 2
Invoking "make -j8 -l8" failed