Laser scan works, mapping does not

[YoshiCmn]

Hey there and thanks for this tutorial. I followed your tutorial on a Raspberry Pi 5 on Ubuntu 24.04 and managed to install everything using ROS2 Jazzy. The Node starts up correctly and the Scan data is also properly displayed in Rviz. The problem I have is that when using the slam launch file Rviz opens up, but it only displays the laser scan, no mapping. Within Rviz I get the error "No map received" as a warning, in the terminal it says "waiting for slam_toolbox node configuration." Do you have an idea how to fix this problem? Sincerely yours and thanks again for this great tutorial Yoshi