No Serial Port on Mac M1

I am working with Arduino/Teensyduino for many years and with platformio since several month with numerous projects and these devices via Serial Port:
ESP8266, ESP32, Teensy4.1
with only working USB cables, plugged into the machine or via USB-hub.
Everything worked fine until today: The serial port could no more connect to my devices. In Terminal, only tty.Bluetooth-Incoming-Port is shown.

With ESP32-project,the error is:
A fatal error occurred: Failed to connect to ESP32: No serial data received.

Same result with Arduino IDE:
No Port detected

I see the same behaviour on my previous machine MacBookPro13" 2015 with Big Sur, working without problems before buying a new machine.

How can I reactivate the serial port? Restart, Mac-Hardware diagnostic, nothing helped
Thanks in advance