Had to reinstall mac os and now I get the following messages though I can open the notebook I want to

[sweattej]

I think this issue stems from having to reinstall the mac os high sierra
after the reinstall of high sierra I had to reinstall anaconda as it would not start
now I get the following message when opening a notebook, though the notebook does open. I suspect that this might be because I had scijava installed previously
[W 23:11:46.577 LabApp] Error loading server extension jupyter_nbextensions_configurator
Traceback (most recent call last):
File "/Users/joelasweatte/anaconda3/lib/python3.7/site-packages/notebook/notebookapp.py", line 1615, in init_server_extensions
mod = importlib.import_module(modulename)
File "/Users/joelasweatte/anaconda3/lib/python3.7/importlib/init.py", line 127, in import_module
return _bootstrap._gcd_import(name[level:], package, level)
File "", line 1006, in _gcd_import
File "", line 983, in _find_and_load
File "", line 965, in _find_and_load_unlocked
ModuleNotFoundError: No module named 'jupyter_nbextensions_configurator'
[I 23:11:46.598 LabApp] JupyterLab extension loaded from /Users/joelasweatte/anaconda3/lib/python3.7/site-packages/jupyterlab
[I 23:11:46.599 LabApp] JupyterLab application directory is /Users/joelasweatte/anaconda3/share/jupyter/lab
[I 23:11:46.601 LabApp] Serving notebooks from local directory: /Users/joelasweatte
[I 23:11:46.601 LabApp] The Jupyter Notebook is running at:
[I 23:11:46.601 LabApp] http://localhost:8888/?token=0454f4268f56ebb6c4e459e1cabd72d03696f17a2bd6f089
[I 23:11:46.602 LabApp] or http://127.0.0.1:8888/?token=0454f4268f56ebb6c4e459e1cabd72d03696f17a2bd6f089
[I 23:11:46.602 LabApp] Use Control-C to stop this server and shut down all kernels (twice to skip confirmation).
[C 23:11:46.618 LabApp]

To access the notebook, open this file in a browser:
file:///Users/joelasweatte/Library/Jupyter/runtime/nbserver-2050-open.html
Or copy and paste one of these URLs:
http://localhost:8888/?token=0454f4268f56ebb6c4e459e1cabd72d03696f17a2bd6f089
or http://127.0.0.1:8888/?token=0454f4268f56ebb6c4e459e1cabd72d03696f17a2bd6f089
[I 23:11:49.335 LabApp] 301 GET /lab/workspaces/auto-B/?clone (127.0.0.1) 27.10ms
[W 23:11:50.383 LabApp] Could not determine jupyterlab build status without nodejs