My build kit is (the only one available): Desktop Qt 5.13.2 MinGW 32-bit.
My OS is Windows 10, 64-bit.
To recreate, freshly install Felgo (free edition) and create a single-page application.
Even if I login I get the same error.
When clicking the normal Start Debugging button in Qt, I get:
:-1: error: [Makefile.Debug:92: copy_desktop_qt_ssl_windows1] Error 1
Tried running qmake from the Build menu.
However, the hot-plugging live mode seems to start up on its own and sure enough works when click the Live Run button.