Sending invoice with spanish EDI conector l10n_es_edi_sii  I get this error. I am using v15 multicompany

AttributeError: 'SSLContext' object has no attribute '_ctx'

  File "/home/alfonso/work15/odoo/addons/l10n_es_edi_sii/models/account_edi_format.py", line 56, in patched_load_cert_chain
    context._ctx.use_certificate(cert_obj)