help！help！

[swim-alone-young]

Help! I can't find any other solution. I want to learn how to use the pluto_robot project to navigate on uneven ground. My current space contains the following content（20.04 ros1 noetic）:

Then my command is as follows:

Such an error occurred

what should I do？

[amock]

Since support for ROS 1 is nearing its end, we recommend switching to the ROS 2 version. Please note, however, that the migration of the pluto_robot repository is still in progress.