yalign-align problem

[keyboardWitch]

Hi， I tried to align en es plan text file with en-es model that provided But there is some problem after "yalign-align en-es en.txt es.txt"

/yalign/wordpairscore.py", line 51, in call AttributeError: 'tuple' object has no attribute 'lower'

I don't know what is the problem , please help me many thanks!

[keyboardWitch]

i found that the sklearn should be lower than 0.18 otherwise there will always be svc error and vector error