Process has died

[horverno]

hi @YashTrikannad

thanks for the work, i built the package and the necessary dependencies but after starting the node / launch i got the following error

rrt_node: /usr/include/boost/smart_ptr/shared_ptr.hpp:728: typename boost::detail::sp_dereference<T>::type boost::shared_ptr<T>::operator*() const [with T = const nav_msgs::OccupancyGrid_<std::allocator<void> >; typename boost::detail::sp_dereference<T>::type = const nav_msgs::OccupancyGrid_<std::allocator<void> >&]: Assertion `px != 0' failed.
[rrt_node-1] process has died [pid 6900, exit code -6, cmd /home/he/catkin_ws/devel/lib/f110_rrt_star/rrt_node __name:=rrt_node __log:=/home/he/.ros/log/3d156952-7f66-11ec-a0b0-00155db905e1/rrt_node-1.log].
log file: /home/he/.ros/log/3d156952-7f66-11ec-a0b0-00155db905e1/rrt_node-1*.log

the simulator seems to work fine, in rviz the topics are live