Attribute Error

I installed ZYMKEY services on my raspberrypi 3 model B+, binding has done properly,but when i run test code i m getting this error

pi@raspberrypi:~ $ python /usr/local/share/zymkey/examples/
Traceback (most recent call last):
File “/usr/local/share/zymkey/examples/”, line 1, in
import zymkey
File “/home/pi/.local/lib/python3.5/site-packages/zymkey/”, line 3, in
from .module import Zymkey
File “/home/pi/.local/lib/python3.5/site-packages/zymkey/”, line 56, in
class Zymkey(object):
File “/home/pi/.local/lib/python3.5/site-packages/zymkey/”, line 578, in Zymkey
_zkSetGMTTime = zkalib.zkSetGMTTime
File “/usr/lib/python3.5/ctypes/”, line 360, in getattr
func = self.getitem(name)
File “/usr/lib/python3.5/ctypes/”, line 365, in getitem
func = self._FuncPtr((name_or_ordinal, self))
AttributeError: /usr/local/lib/ undefined symbol: zkSetGMTTime

please help me for this
thanks in advance

Your experience is similar to mine. I am not in the employ of Zymkey but have documented my findings and submitted the experience.

You create usr/local/lib folders in usr/lib/python2.7/dist-packages then it seems like
usr/lib/python2.7/dist-packages/usr/local/lib .
Then copy file from usr/local/lib and paste it in usr/lib/python2.7/dist-packages/usr/local/lib then test.