'Arduino.h' file not found because esp32Dev-Folder is missed

I made two projects with ESP32 Dev Platform and have chosen the Arduino framework. The project is created but I don’t see any Arduino.h inside.

I’m using an updated VS Code.

The build process stops because the missed “Arduino.h”.

The first line is #include <Arduino.h>

The pioenvs does not contain any esp32Dev-Folder (and so also no Arduino Framework)