@endjoker: I heard about such problem on macos version of python. using a vm or a container should solve an issue
@andreykurilin:matrix.org Thank you for your answer. I am using a container environment on a Linux system. I learned from Google that the cause of this problem is the multiocessing.pool function due to multiprocessing. python version 3.4 solves this problem, is there any way I can modify the python environment where the rally tool is running? Downloading the latest version of python directly does not solve the problem.