How can I debug with fake Arduino

[ats3788]

my
platform.ini looks like this
[env:native]
platform = native
build_flags = -std=gnu++11
lib_deps = ArduinoFake
build_type = debug
debug_init_break = tbreak setup

the compiler makes an debug code is 7 time bigger then the release code
but PlatformIO complains about something missing in platformio.ini

[MacDada]

PlatformIO complains about something missing in platformio.ini

u'd better be more precise, than just complains about something ;-)