On Thursday, October 5, 2017 at 10:22:38 AM UTC+1, Angela Hicks wrote:
>
> There's some speculation this is related to: this post 
> <https://groups.google.com/forum/#!topic/sage-devel/1cBRR4nfaqE> which 
> seems not unreasonable, but I'll post the details here (at kcrisman's 
> suggestion).
>
> I'm running Fedora 26 as a virtual machine, I recently installed Sage 8.0 
> from source. The installation worked great until I:
>
> 1) Uploaded a zipped file into the old sage notebook gui.
>

Yes, indeed, this doesn't work with *.zip archives any more. :-(
https://github.com/sagemath/sagenb/issues/433

Does it work for you with individual *.sws files (the "original" sagenb 
format)?
(this does work, I think)

 

> This triggers a 500:internal error on screen
> and a "Build Error:Could not build url for endpoint 'home' with values 
> ['username']. Did you mean 'worksheet_listing.home' instead?" on the 
> command line.
> The error seems benign (can be ignored) until I
> 2) Restart sage
> 3) Start the new Notebook Exporter gui.
> The gui has no links (so is not useable), and the command line reports a 
> much longer error, which is posted in entirety here 
> <https://ask.sagemath.org/question/38486/build-error-when-uploading-notebooks-in-sage/?comment=38658#post-id-38658>,
>  
> where I first reported the problem.  
> Repeated restarts do not fix the problem, although after a single restart 
> both the notebook gui and the jupiter gui work fine.  I can consistently 
> replicate the same steps if I start again with a new copy of the same 
> virtual machine.  I have not tried reinstalling sage to see if I can 
> replicate the problem afterwards.
>
> In the linked post, someone pointed out that they assumed no one would 
> continue using sagenb, so if it was triggering a problem, it might not 
> affect very many.  I'm not sure how widespread this problem is, but it's 
> worth pointing out I seem to be triggering it by doing exactly what people 
> will tend to do as they update their sage server to 8.0:  First import old 
> notebooks into sagenb, then use the Notebook Exporter to switch them to 
> Jupyter.  
>

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