TLT CV Sample Workflows - Jupyter: ImportError: cannot import name 'create_prompt_application'

Hello -

I am working through the TLT CV Sample Workflows, and have been stuck on an issue all day. I am using a cloud machine through paperspace. When I setup my notebook and run through the commands for the first time, I never see this message. However, if I shut the machine down, then start it up again, then go to Jupyter Notebook, I see the following error. Could you please help?

[I 19:08:29.149 NotebookApp] KernelRestarter: restarting kernel (4/5), new random ports
    Traceback (most recent call last):
      File "/usr/lib/python3.6/runpy.py", line 193, in _run_module_as_main
        "__main__", mod_spec)
      File "/usr/lib/python3.6/runpy.py", line 85, in _run_code
        exec(code, run_globals)
      File "/usr/local/lib/python3.6/dist-packages/ipykernel_launcher.py", line 15, in <module>
        from ipykernel import kernelapp as app
      File "/usr/local/lib/python3.6/dist-packages/ipykernel/__init__.py", line 2, in <module>
        from .connect import *
      File "/usr/local/lib/python3.6/dist-packages/ipykernel/connect.py", line 13, in <module>
        from IPython.core.profiledir import ProfileDir
      File "/usr/lib/python3/dist-packages/IPython/__init__.py", line 49, in <module>
        from .terminal.embed import embed
      File "/usr/lib/python3/dist-packages/IPython/terminal/embed.py", line 18, in <module>
        from IPython.terminal.interactiveshell import TerminalInteractiveShell
      File "/usr/lib/python3/dist-packages/IPython/terminal/interactiveshell.py", line 20, in <module>
        from prompt_toolkit.shortcuts import create_prompt_application, create_eventloop, create_prompt_layout, create_output
    ImportError: cannot import name 'create_prompt_application'

Thank you,
Bryan