FPS project crashing when launched

**Description:** The FPS game is not able to run, it crashes at this line: https://github.com/edbeeching/godot_rl_agents_examples/blob/5e064c9b7ca619fdee3e69daa16b8c5b31760bb2/examples/FPS/main.gd#L21  with the following output messages:  **Expected behavior:** Launch the selected game **Steps to reproduce:** - Download this repo - Launch Godot - Import FPS godot project file - Click run button (or F5) **Environment info:** - Windows 10 - Godot 4.0.1 - Using miniconda virtual env system **Additional info:** - Also tried to first run `gdrl` before launching the game - Also looked for docs, especially as the introductory tutorial on the RingPong game (https://huggingface.co/learn/deep-rl-course/unitbonus3/godotrl?fw=pt) mentiones it saying: "_This can be a great benefit on more complex environments, like the **multi-player FPS we will learn about in the next chapter.**_" but was not able to find the mentioned chapter.