@dave17 said in How do I get the exception details in UIFlow?: @ajb2k3 Hi I tried to connect Thonny to my M5stack Core 2 but with no success, I when I set the port to esp32 and /dev/USB0 I get some serial port messages but the device is not recognized and I cannot program it with Thonny. Same with mu. Can you please help? What kind of messages? Have you set Thonny or mu to communicate correctly? Have you Hit CTRL+C to stop the running Micropython code in order to to get into REPL?