pyinstaller打包py文件为exe的报错

打包为exe后，运行出现报错
Exception in Tkinter callback
Traceback (most recent call last):
___ File "Tkinter.pyc", line 1532, in __call__
File "zhaopin.py", line 153, in reg
File "zhaopin.py", line 39, in GetPath
File "zhaopin.py", line 44, in GetIfo
File "bs4__init__.pyc", line 152, in init
FeatureNotFound: Couldn't find a tree builder with the features you requested: l
xml. Do you need to install a parser library?
但是我在pycharm中运行正常，且lxml已经安装了，这是为什么呢