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. 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. -- You received this message because you are subscribed to the Google Groups "sage-devel" group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-devel+unsubscr...@googlegroups.com. To post to this group, send email to sage-devel@googlegroups.com. Visit this group at https://groups.google.com/group/sage-devel. For more options, visit https://groups.google.com/d/optout.
