Error after giving the EDA data

[ysaidcan]

I am using the python scripts for e4 EDA data. The code giving error first butter_filter. (sigtools._linear_filter(b, a, x, axis) TypeError: unsupported operand type(s) for *: 'float' and 'Timestamp') I remove the function but it is giving other errors.
File "C:\Users\Said\Anaconda2\lib\site-packages\pandas\core\groupby.py", line 653, in iter
return self.grouper.get_iterator(self.obj, axis=self.axis)

AttributeError: 'NoneType' object has no attribute 'get_iterator'

I am using Windows 10 64 bit machine.