Python 乳液框架安装

我是一名兽医学生，正在攻读流行病学专业.我正在try 使用Emulsion框架，这是一个基于Python的软件.

我try 逐个安装，但当我try 运行测试模拟时，会显示以下内容:

Traceback (most recent call last):
  File "c:\users\dell\appdata\local\programs\python\python39\lib\runpy.py", line 197, in _run_module_as_main
    return _run_code(code, main_globals, None,
  File "c:\users\dell\appdata\local\programs\python\python39\lib\runpy.py", line 87, in _run_code
    exec(code, run_globals)
  File "C:\Users\DELL\AppData\Local\Programs\Python\Python39\Scripts\emulsion.exe\__main__.py", line 4, in <module>
  File "c:\users\dell\appdata\local\programs\python\python39\lib\site-packages\emulsion\__main__.py", line 185, in <module>
    from   emulsion.tools.plot          import plot_outputs
  File "c:\users\dell\appdata\local\programs\python\python39\lib\site-packages\emulsion\tools\plot.py", line 70, in <module>
    from   bokeh.layouts                import gridplot, column, widgetbox
ImportError: cannot import name 'widgetbox' from 'bokeh.layouts' (c:\users\dell\appdata\local\programs\python\python39\lib\site-packages\bokeh\layouts.py)

有谁能帮帮我吗？