I am able to build my project, but when I try to flash it to the board via ninja flash_<target> I can select the device in nrfjprog.py, I know, that I have to use "'0'" as input, so that the script doesn't result in an error, but then I get the following error:
nrf5_SDK_for_Mesh_v4.0.0_src/CMake/nrfjprog.py", line 93, in main with multiprocessing.Pool(len(devices)) as p: AttributeError: __exit__
Is there a way to fix this?