This is a folder containing the ZIP archive of the code.
These ZIPs contain all the libraries (to be put in the Arduino libraries folder) and the main code for the remote control (Bull), the robot (Dozer) and the basket (Superbowl).
If one of those archive contains the library ArduinoJson-6.20 and higher, delete it and download the 6.19 or lower version from the Library Manager.