ESP32 Debugging doesn't start on platformio

ESP-Prog debugging works, I’ve personally tested it, e.g. in ESP-Prog debugger issue. No visible error. (Ubuntu) - #41 by maxgerhardt

What happens when you drop into a CLI and execute

pio upgrade --dev
pio debug --interface=gdb -x .pioinit

in the project’s root directory?

This starts OpenOCD and GDB, and should show an error if there is some.

If there is not, you’ve likely installed a conflicting VSCode extension, as in the linked topic.