Today I was compiling PX firmware twice on my windows PC, and was stopped by the same error displayed by the image attached. I really appreciate if somebody could give me an advice. Thanks in advance.
I would kill everything and try again, but add VERBOSE=1.
I'd also highly recommend using Ubuntu or OSX. It's significantly less painful for PX4 development (even virtualized). https://dev.px4.io/en/setup/dev_env.html