Using Viola with jupyter notebook on Binder gives error - jupyter-notebook

I am doing the fast.ai v2 course on deep learning and on deploying my first app (as suggested in chapter 2 of the book, I am using viola on top of the jupyter notebook to make it run without showing the cells, therefore act as an app. When I run it on binder it gives the following error.
The related github (therefore the codes) is here and you can open the binder by clicking the logo in the readme. I would be grateful for your help

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Jupyter notebook spell checker with suggestions

I am running jupyter via anaconda in a web browser on windows. In nbextensions: I have tried,
calico-spell-check,
calico-spell-check,
spellchecker/main.
All highlight misspelled words fine but none suggest correct words.
Am I missing a set up step, my google fu is letting me down. Is there another extension that works as expected. I find it hard to believe that there is no true spell checker / corrector extension for a system designed around presenting of data, I must be missing a set up step or fundamental understanding of the system.
From what I've seen, such as this you just get highlighting in the classic Jupyter notebook interface. The limitations of what can be done with that interface is one of the reasons the current path forward for Jupyter development is JupyterLab and efforts based on similar underlying modern machinery, i.e., notebook version 7 is intended to look like the classic notebook interface while being based on the more modern components.
JupyterLab has spell check with suggestions available already added for editing markdown cells and editing markdown documents, see here. You can try it out in your browser now by going here and clicking launch binder to bring up a session where the extension is already installed and working.
For code, JupyterLab already has a nice autocomplete implementation that you'll get when you start typing a word and press tab to see suggestions. Additionally, some ideas have been offered for extending the current spell checking extension for JupyterLab to handle code cells, see tracking for this issue.

Jupypter Notebook in VS Code won't compile Latex Code

I'm new to programming and this forum. My problem is that latex code in markdown cells in a Jupypter notebook opened in vs code won't compile properly. I know that there are several threads already here in this forum and in the internet, but nothing worked so far.
I got to the point where I completely reinstalled my macbook.
So I run the latest VS Code Version on High Sierra, Python is installed via condo and my vs code extensions are python from microsoft and the Jupypter extension.
When VS code is newly installed first everything works but the second time the layout of the Jupyter notebooks changes and latex code won't compile any more.
So The first picture is how it looks on my computer, the second is how it should look. I also recognize, the look of the notebook is slightly different as kernel and host information are (in the second photo) visualized on top of the notebook - below the tabs there is a bar that show the information and also the play sign and so on to run cells.
The weird thing is, that in the beginning, first time after complete installation, on my computer it looked like it should, second time (and every time after that) it changed and it's not working any more without me changing anything.
Does anybody have a clue how to solve this problem?
Thanks a lot!
first pic - my computer
second pic - how it should look

Cant connect to workspace

Im trying to complete the very first training module offered by MS. Something Im missing that isn't detailed on the documentation of the training.
These are the instructions I'm following
https://github.com/MicrosoftDocs/mslearn-aml-labs/blob/master/labdocs/Lab01.md
All good until I have to run the second command defined on the notebook called
"01-Getting_Started_with_Azure_ML.ipynb".
And yes I entered the device login code as the instructions indicate.
Look at the attached screenshot of the error returned after running the command of the notebook.
Opened a case with Microsoft. They noticed is an issue affecting their VM servers.
This is their reply:
Hi Marbin,
Hope you are doing good. I had discussed this with our team as well. This was a known issue with workspace names with capital letters. So, the workspace name ‘ML_Battlefield’ was creating the issue. This is fixed in SDK version 1.3.0.
In the compute instance notebook, we can update the SDK version to: pip install --upgrade azureml-sdke

Impossibily to run Jupyter notebook from Windows start menu and required tokens

I am a novice in the use of Python and I am using PandasBiogeme to estimate discrete choice models.
My issue is related to the Jupyter notebook. Usually when I wish to use it, I select it from the start menu of Windows 7 and automatically a new tab opens up in Chrome.
Yesterday, actually by not knowing exactly why, I logged out from Jupyter notebook and today when I launched it from the start menu the following error message appeared:
I thus decided to reinstall Anaconda, and PandasBiogeme and to update both of them.
Now when I wish to open Jupyter notebook from the start menu a prompt menu appears and suddenly disappears. Therefore I need to open the Anaconda Powershell and type
jupyter notebook
Yet, when I do this I receive the same error message I reported above
I typed in the second URL and I was then able to work again.
Yet, when I close Jupyter notebook and try to launch it again the same problem arises and I have to insert again 'a' token. I wrote 'a' token, because if I select by chance the token reported at the following URL (which has nothing to do with my work)
https://jupyter-notebook.readthedocs.io/en/stable/security.html
namely, this one:
http://localhost:8888/?token=c8de56fa4deed24899803e93c227592aef6538f93025fe01
and then Jupyter notebook works and I can carry out my estimation.
I read different posts on the possibility to set a password to avoid problems related to tokens, but only the first time I inserted the token I had the option to insert a password in in a html page, but I decided not to do it. Now I believe it could be the case.
This is something that happened overnight, without, I believe, my doing anything specifically.
This issue is driving me crazy and I would be thankful if any of you had a potential suggestion.
Many thanks.
Marco

Jupyter R: The procedure entry point inflateReset2 could not be located in the dynamic link library zlib1.dll

I'm trying to get my company to adopt Jupyter as a standard interface for R on Windows however after installing it and opening a brand new notebook I get this error message that doesn't go away:
the procedure entry point inflateReset2 could not be located in the dynamic link library zlib1.dll
I did a google search and tried installing gtk3 for Windows (which in itself loses marks in my books as it brings up a Symantic warning that they don't know enough about this file which wouldn't look good to the average business user) however that has not helped..although I restarted Jupyter but not my laptop after installing it (as it's currently in the middle of running something long).
What is a practical business-friendly solution to this error message?

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