tzname PDT identified but not understood in Dashboard script

[dragan1979]

/usr/lib/python2.7/site-packages/dateutil/parser/_parser.py:1204: UnknownTimezoneWarning: tzname PDT identified but not understood.  Pass `tzinfos` argument in order to correctly return a timezone-aware datetime.  In a future version, this will raise an exception.
  category=UnknownTimezoneWarning)
response":"success","info":"processed: 0; failed: 0; total: 0; seconds spent: 0.000002"}

_parser.py 

 elif res.tzname:
            # tz-like string was parsed but we don't know what to do
            # with it
            warnings.warn("tzname {tzname} identified but not understood.  "
                          "Pass `tzinfos` argument in order to correctly "
                          "return a timezone-aware datetime.  In a future "
                          "version, this will raise an "
                          "exception.".format(tzname=res.tzname),
                          category=UnknownTimezoneWarning)
            aware = naive

[dragan1979]

turned out i had CET time zone, switching it to PDT solved issue, but although i set discovery to True, still

response":"success","info":"processed: 0; failed: 0; total: 0; seconds spent: 0.000002"}