[sage-support] Re: Sage 9.0 macOS Jupyter Server failed to start

[slelievre]

We often get reports of

   SageMath 8.x works but not SageMath 9.0

but it usually turns out that in such cases, the version that works
was installed under macOS 10.14 Mojave, and that what is
causing problems is that the version that fails to work was
installed under macOS 10.15 Catalina.

Have a look at previous such reports:

- Mac OS Catalina Does Not Allow Launching Sage
  https://ask.sagemath.org/question/48246

- how to unlock sagemath 8.8 on MacOS 10.15 Catalina?
  https://ask.sagemath.org/question/48293

- New SageMath 9.0 installation not running on Catalina
  https://ask.sagemath.org/question/49568

- Sage 9.0 installation issues on macOS 10.15.2 Catalina
  https://ask.sagemath.org/question/49572

Let us know if any solution proposed there solves your problem.

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[sage-support] Re: Sage 9.0 macOS Jupyter Server failed to start

[Steve Emmett]

I am having maybe a similar issue. Im on MacOS 10.15.3  I've successfully 
used 8.9 for quite a while.  I downloaded *sage-9.0-OSX_10.15.2-x86_64.app.dmg 
.*
I did the install selected SageMath-9.0.app in Applications.

Safari starts up and overlaid on that screen is the following error message:

[image: Screen Shot 2020-03-17 at 101002 .png]

The only log entry is:


shell-init: error retrieving current directory: getcwd: cannot access 
parent directories: Operation not permitted.


Maybe not exactly like your but I would tend to agree that something that 
was hooked up in pre Sage 9.x is now not there in Sage 9.x





On Sunday, January 5, 2020 at 2:39:50 PM UTC-5, Murray Eisenberg wrote:
>
> When I open SageMath-9.0.app under macOS Catallina (10.15.2), I get an 
> immediate pop-up error window saying, "Jupyter Server failed to start". 
>
> The log shows:
>
> ┌┐
> │ SageMath version 9.0, Release Date: 2020-01-01 │
> │ Using Python 3.7.3. Type "help()" for help.│
> └┘
> Please wait while the Sage Jupyter Notebook server starts...
>
> However, I can get the Jupyter server to start with an indirect method 
> that was never required in earlier versions of SageMath-x.x.app, namely:
>
>1. In Finder, Show package contents for SageMath-9.0.app.
>2. Navigate in Finder to Contents/MacOS.
>3. Double-click Sage.
>
> That both starts the server and opens the expected client window in 
> Safari, from which I can open and evaluate cells in an existing notebook or 
> create a new SageMath 9.0 notebook.
>
> So something that used to be "hooked up" between the SageMath-x.x.app and 
> the command to start the jupyter server has been broken with 9.0.
>
>
>

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