There's a ValueError on EM_demo.py

[tiddlerhxy]

hello! When I ran EM_demo.py, an error occurred,can you tell me what happened? The following is the wrong report: Traceback (most recent call last): File "/root/root/eyes/appone/tt6.py", line 55, in fitmodel.EM_fit() File "/usr/local/python3.6.6/lib/python3.6/site-packages/pybasicbayes/abstractions.py", line 221, in EM_fit return self._EM_fit(self.EM_step,tol=tol,maxiter=maxiter) File "/usr/local/python3.6.6/lib/python3.6/site-packages/pybasicbayes/abstractions.py", line 206, in _EM_fit method() File "/usr/local/python3.6.6/lib/python3.6/site-packages/pybasicbayes/models/mixture.py", line 481, in EM_step [l.expectations for l in self.labels_list]) File "/usr/local/python3.6.6/lib/python3.6/site-packages/pybasicbayes/distributions/multinomial.py", line 190, in max_likelihood counts = self._get_weighted_statistics(data,weights) File "/usr/local/python3.6.6/lib/python3.6/site-packages/pybasicbayes/distributions/multinomial.py", line 140, in _get_weighted_statistics data = data if data else [None]*len(weights) ValueError: The truth value of an array with more than one element is ambiguous. Use a.any() or a.all()