Spam scorer fail with invalid value

[gdchamal]

[mq-worker-d996c9fd-5stwx] Traceback (most recent call last): 
[mq-worker-d996c9fd-5stwx]   File "/srv/caliopen/src/backend/interfaces/NATS/py.client/caliopen_nats/subscribers.py", line 46, in process_raw 
[mq-worker-d996c9fd-5stwx]     new_message = deliver.process_raw(payload['message_id']) 
[mq-worker-d996c9fd-5stwx]   File "/srv/caliopen/src/backend/interfaces/NATS/py.client/caliopen_nats/delivery.py", line 37, in process_raw 
[mq-worker-d996c9fd-5stwx]     message = self.qualifier.process_inbound(raw) 
[mq-worker-d996c9fd-5stwx]   File "/srv/caliopen/src/backend/components/py.pi/caliopen_pi/qualifiers/mail.py", line 133, in process_inbound 
[mq-worker-d996c9fd-5stwx]     extractor.process(self.user, new_message, participants) 
[mq-worker-d996c9fd-5stwx]   File "/srv/caliopen/src/backend/components/py.pi/caliopen_pi/features/mail.py", line 210, in process 
[mq-worker-d996c9fd-5stwx]     features = self._get_features() 
[mq-worker-d996c9fd-5stwx]   File "/srv/caliopen/src/backend/components/py.pi/caliopen_pi/features/mail.py", line 145, in _get_features 
[mq-worker-d996c9fd-5stwx]     features.update(self.spam_informations) 
[mq-worker-d996c9fd-5stwx]   File "/srv/caliopen/src/backend/components/py.pi/caliopen_pi/features/mail.py", line 87, in spam_informations 
[mq-worker-d996c9fd-5stwx]     spam = SpamScorer(self.message.mail) 
[mq-worker-d996c9fd-5stwx]   File "/srv/caliopen/src/backend/components/py.pi/caliopen_pi/features/helpers/spam.py", line 54, in __init__ 
[mq-worker-d996c9fd-5stwx]     self.scores = extract_mail_spam_scores(mail) 
[mq-worker-d996c9fd-5stwx]   File "/srv/caliopen/src/backend/components/py.pi/caliopen_pi/features/helpers/spam.py", line 17, in extract_mail_spam_scores 
[mq-worker-d996c9fd-5stwx]     score = float(score) 
[mq-worker-d996c9fd-5stwx] ValueError: could not convert string to float: (-0.999) ALL_TRUSTED,HTML_MESSAGE 
[mq-worker-d996c9fd-5stwx] ERROR:subscribers:deliver process failed for raw {u'message_id': u'7df3c504-7a9f-4a13-a495-fcb1d0e1b9b5', u'user_id': u'f365fc36-3401-4ee3-95cb-9c6f6078f00d', u'order': u'process_raw', u'identity_id': u'2ed4970b-75bc-496d-9842-17a69fed643b'}: None