remote roscore cant find package
i have a little problem to get my envoirment running.
My setup : A PC running ubuntu 16.04 with ROS installed. This is where i want to develop the code and manage my packages. Here runs everything fine. The scripts are python scripts. And when i run the scripts in seperated terminals, everything is fine.
Next i have a raspberry 3 also running ubuntu. I installed the distro from Ubiquity Robotics. There is ROS already installed. This is the one where roscore is running. Both can see eachother over the net.
Now my problem is, when i try to run a package via rosrun on the raspi it doesn´t find the package. So what must be setuped on the raspi that he finds the package stored on the develop system.