[SOLVED] Arduino 1.8.19 compile error : ImportError: no module named serial [Raspberry Pi]

[EdtheWino]

Using a Raspberry Pi platform I am getting a "no module named serial" error on compile of ESP32 sketch under 1.8.19 Arduino IDE.

The Espressif library is installed. Does anyone know what causes this error generation or how to correct it? I have installed python3.

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Traceback (most recent call last):
  File "/home/pi/.arduino15/packages/esp32/tools/esptool_py/3.1.0/esptool.py", line 38, in <module>
    import serial
ImportError: No module named serial
Multiple libraries were found for "WiFi.h"
 Used: /home/pi/.arduino15/packages/esp32/hardware/esp32/2.0.2/libraries/WiFi
 Not used: /home/pi/Arduino/libraries/WiFiNINA
 Not used: /opt/arduino-1.8.19/libraries/WiFi
exit status 1
Error compiling for board ESP32 Dev Module.

[EdtheWino]

Solution:

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sudo apt install python-is-python3