when i use leaderf and type in "fix" or "abc" or others, errors appear.

[linguanyuanA]

fi
Error detected while processing function leaderf#startFileExpl..leaderf#LfPy:
line 2:
Traceback (most recent call last):
File "", line 1, in
File "/home/fps/exvim/vimfiles/plugged/LeaderF/autoload/leaderf/manager.py", line 450, in startExplorer
self.input(False)
File "/home/fps/exvim/vimfiles/plugged/LeaderF/autoload/leaderf/manager.py", line 463, in input
self._search(self._content)
File "/home/fps/exvim/vimfiles/plugged/LeaderF/autoload/leaderf/manager.py", line 198, in _search
self._fuzzySearch(content)
File "/home/fps/exvim/vimfiles/plugged/LeaderF/autoload/leaderf/manager.py", line 276, in _fuzzySearch
pairs = self._filter(30000, filter_method, content)
File "/home/fps/exvim/vimfiles/plugged/LeaderF/autoload/leaderf/manager.py", line 221, in _filter
result.extend(filter_method(cb[:]))
File "/home/fps/exvim/vimfiles/plugged/LeaderF/autoload/leaderf/manager.py", line 243, in
return (p for p in pairs if p[0])
File "/home/fps/exvim/vimfiles/plugged/LeaderF/autoload/leaderf/manager.py", line 242, in
for line in iterable)
File "/home/fps/exvim/vimfiles/plugged/LeaderF/autoload/leaderf/fuzzyMatch.py", line 308, in getWeight
val)
File "/home/fps/exvim/vimfiles/plugged/LeaderF/autoload/leaderf/fuzzyMatch.py", line 41, in evaluate
i = ((x & -x) - 1).bit_length()
AttributeError: 'int' object has no attribute 'bit_length'

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vim --version | grep python

+cryptv +linebreak +python/dyn +viminfo
+cscope +lispindent -python3 +vreplace
i also tried to install python 3.4.3, but the errors still exist.
my os is cenos 6.5.
fix.txt is a file in my project.

[Yggdroot]

Since your vim compiled with '-python3', this plugin will use python2, however int.bit_length() was first introduced in python2.7, so I conclude that your python2 version is lower than 2.7.
If you want to use python3, make sure your vim compiled with '+python3'.