AttributeError: 'str' object has no attribute 'isoformat'

[chidoman321]

hi, i followed the cert-tools readme guide, but when i try to run this script instantiate-certificate-batch -c conf.ini, it returns me this err

(venv) C:\Users\yeyei\OneDrive\Documentos\cert-tools\certs>instantiate-certificate-batch -c conf.ini
Traceback (most recent call last):
File "c:\users\yeyei\appdata\local\programs\python\python39\lib\runpy.py", line 197, in _run_module_as_main
return _run_code(code, main_globals, None,
File "c:\users\yeyei\appdata\local\programs\python\python39\lib\runpy.py", line 87, in run_code
exec(code, run_globals)
File "C:\Users\yeyei\OneDrive\Documentos\cert-tools\certs\venv\Scripts\instantiate-certificate-batch.exe_main.py", line 7, in
File "c:\users\yeyei\onedrive\documentos\cert-tools\certs\venv\lib\site-packages\cert_tools\instantiate_v2_certificate_batch.py", line 150, in main
instantiate_batch(conf)
File "c:\users\yeyei\onedrive\documentos\cert-tools\certs\venv\lib\site-packages\cert_tools\instantiate_v2_certificate_batch.py", line 114, in instantiate_batch
certs = create_unsigned_certificates_from_roster(template, recipients, use_identities, config.additional_per_recipient_fields, config.hash_emails)
File "c:\users\yeyei\onedrive\documentos\cert-tools\certs\venv\lib\site-packages\cert_tools\instantiate_v2_certificate_batch.py", line 73, in create_unsigned_certificates_from_roster
issued_on = helpers.create_iso8601_tz()
File "c:\users\yeyei\onedrive\documentos\cert-tools\certs\venv\lib\site-packages\cert_tools\helpers.py", line 61, in create_iso8601_tz
return ret.isoformat()
AttributeError: 'str' object has no attribute 'isoformat'

[chidoman321]

okey i applied the changes of the failed pull request

def create_iso8601_tz():
ret = datetime.now(timezone.utc).isoformat()[:-13]+'Z'
return ret.isoformat()
ret = datetime.now(timezone.utc).isoformat()
return ret

[flachica]

This Issue must be opened. Still happening. I suggest this PR

[neon-ninja]

Looks to have been caused by this commit - c62e355#diff-c2c850a56d3ef345cce593373b5331dfa854a8826501a7f61586f86404c7e62f

[parkerqueen]

The issue still persists with Python 3.9. Any update on this?

[JoshueG]

Still happening