Error occuered when compiling dc motor module sample ino

[nisshan-x]

Symptom

I downloaded M5Stack/examples/Modules/LEGO_PLUS/LEGO_PLUS.ino in Arduino IDE and verified it, but error happened.

error message

Multiple libraries were found for "SD.h"
 Used: /home/nishi/.arduino15/packages/esp32/hardware/esp32/2.0.0/libraries/SD
 Not used: /home/nishi/Downloads/arduino-1.8.16/libraries/SD
Multiple libraries were found for "WiFiClient.h"
 Used: /home/nishi/.arduino15/packages/esp32/hardware/esp32/2.0.0/libraries/WiFi
 Not used: /home/nishi/Downloads/arduino-1.8.16/libraries/WiFi
exec: "python": executable file not found in $PATH
Error compiling for board M5Stack-FIRE.

Environment

• Ubuntu 20.04.3
• Arduino IDE v.1.8.16
  • Board Manager esp32 v.2.0.0
  • Library Manager
  • M5Stack v.0.3.6 (chose "Install all")
• Board: M5Stack-FIRE (but it was not connected)

Source code

M5Stack/examples/Modules/LEGO_PLUS/LEGO_PLUS.ino https://github.com/m5stack/M5Stack/blob/master/examples/Modules/LEGO_PLUS/LEGO_PLUS.ino

Additional information

• I installed the OS today and also installed the Arduino IDE today. This means I have not done anything other than the steps above.
• When I installed M5Stack Library in Arduino IDE, I got below message:

 no protocol: 
java.lang.RuntimeException: java.net.MalformedURLException: no protocol: 
    at cc.arduino.contributions.libraries.ui.LibraryManagerUI.lambda$onInstallPressed$4(LibraryManagerUI.java:250)
    at java.lang.Thread.run(Thread.java:748)
Caused by: java.net.MalformedURLException: no protocol: 
    at java.net.URL.<init>(URL.java:593)
    at java.net.URL.<init>(URL.java:490)
    at java.net.URL.<init>(URL.java:439)
    at cc.arduino.contributions.DownloadableContributionsDownloader.download(DownloadableContributionsDownloader.java:64)
    at cc.arduino.contributions.DownloadableContributionsDownloader.download(DownloadableContributionsDownloader.java:60)
    at cc.arduino.contributions.libraries.LibraryInstaller.performInstall(LibraryInstaller.java:155)
    at cc.arduino.contributions.libraries.LibraryInstaller.install(LibraryInstaller.java:125)
    at cc.arduino.contributions.libraries.ui.LibraryManagerUI.lambda$onInstallPressed$4(LibraryManagerUI.java:240)
    ... 1 more

[nisshan-x]

Sorry, I forgot to install python3 to my new environment. I installed python3, then compiling the code finished without error. I'd like to close this issue. Thanks.