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Istallation failed

Hi all I’m trying to install erpnext with command sudo python3 --product
but following error occurs:

Traceback (most recent call last):
File “”, line 500, in
File “”, line 281, in install_bench
run_playbook(‘site.yml’, sudo=True, extra_vars=extra_vars)
File “”, line 416, in run_playbook
success = subprocess.check_call(args, cwd=playbooks_folder, stdout=log_stream, stderr=sys.stderr)
File “/usr/lib/python3.8/”, line 364, in check_call
raise CalledProcessError(retcode, cmd)
subprocess.CalledProcessError: Command ‘[‘ansible-playbook’, ‘-c’, ‘local’, ‘site.yml’, ‘-vvvv’, ‘-e’, ‘@/tmp/extra_vars.json’, ‘–become’, ‘–become-user=erp_administrator’]’ returned non-zero exit status 2.

can someone help me to solve the problem?
thank you very much in advance