Built-in Planner

A built-in planner is not really built-in, there is just a built-in integration script for it. So the planner has to be downloaded, and the environment must be prepared manually.

The Fast Downward Planning System

All which has to be done is to run the following command in the terminal:
Hint: CMAKE is required.

pip install --no-compile downward-dlr

Now it should work.

Fast-Forward Planning System v2.3

To prepare the Fast-Forward Planning System, the following steps have to be executed:

1. Download the system FF-Page, direct download Link
2. Extract the Planning System and make it.
3. Add the path of the Planning System to the PATH variable, to make the “ff” command available in the terminal.

Now it should work.