Traceback (most recent call last):


 "C:\Users\S10500\AppData\Local\Continuum\anaconda3\lib\site-packages\spyder\widgets\ipythonconsole\client.py", line 575, in show_time

elapsed_time = time.monotonic() - self.t0
TypeError: unsupported operand type(s) for -: 'float' and 'NoneType'

Traceback (most recent call last):


 "/www/lemur/lemur/common/schema.py", line 160, in decorated_function

resp = f(*args, **kwargs)


 "/www/lemur/lemur/certificates/views.py", line 482, in post

cert = service.create(**data)


 "/www/lemur/lemur/certificates/service.py", line 273, in create

cert_body, private_key, cert_chain, external_id, csr = mint(**kwargs)


 "/www/lemur/lemur/certificates/service.py", line 223, in mint

cert_body, cert_chain, external_id = issuer.create_certificate(csr, kwargs)


 "/www/lemur/lemur/plugins/lemur_cfssl/plugin.py", line 58, in create_certificate

key = bytes.fromhex(hex_key)
TypeError: fromhex() argument must be str, not None
