Bug: [Out] not showing in Cocalc Notebook Cells

mafloh commented 2 years ago

Bug Description

Cells process (showing a small arrow pointing to the left) but do not show [Out] with output, nor an error. It is a fresh install with Ubuntu 20.04 and nginx reverse proxy.

A few times it has worked, I could not reproduce. Sometimes the backend is spawning forever, sometimes it is ready. Same behaviour in both cases.

Classic Jupyter Notebook works like a charm.

Troubleshooting

Switching Python Kernels, reloading the page, restarting the processes did not help.
The processes page show red Memory, however the server uses only a few hundred MB of 4 GB Ram. Disk Space is plenty too.
Logs: /var/log/hub.log and ~/.smc/logs/logdo not exist (?)

I can send the server address in a private message.

williamstein commented 2 years ago

Yes, I can reproduce this with the latest version. This is very weird, given that the exact same code is running in numerous other environments well. Very, very weird. I've never seen this sort of bug before. Will fix it asap.
The logs are in /var/log/hub for the systemwide hub and ~/.smc/logs/log for each project. They should be there.

williamstein commented 2 years ago

OK, this should now be fixed. I didn't change any code, but just did a clean build and push of the Docker image. I think something must have been corrupted involving something that got installed during that Docker build.

mafloh commented 2 years ago

Thanks for your help! I pulled the new Docker image and the issue pertains.

Error Log

I realised I searched at the wrong place. Of course I have to go inside the docker first container with sudo docker exec -it cocalc bash.

***
Thu, 26 Aug 2021 09:25:04 GMT body-parser deprecated bodyParser: use individual json/urlencoded middlewares at dist/servers/app/api.js:81:37
Thu, 26 Aug 2021 09:25:04 GMT body-parser deprecated undefined extended: provide extended option at node_modules/body-parser/index.js:105:29
Thu, 26 Aug 2021 09:25:04 GMT express-session deprecated undefined resave option; provide resave option at dist/auth.js:454:66
Thu, 26 Aug 2021 09:25:04 GMT express-session deprecated undefined saveUninitialized option; provide saveUninitialized option at dist/auth.js:454:66
Warning: connect.session() MemoryStore is not
designed for a production environment, as it will leak
memory, and will not scale past a single process.
origin="https://something.domain.org" is not allowed
origin="https://something.domain.org" is not allowed

williamstein commented 2 years ago

Thanks for your help! I pulled the new Docker image and the issue pertains.

As a triple check that you're running the new version, can you type "sage --version" in a terminal and show me the output?

mafloh commented 2 years ago

"sage --version" returns: SageMath version 9.3, Release Date: 2021-05-09

williamstein commented 2 years ago

Thanks. Unfortunately, I'm now definitely 100% stumped by your problem. I'll reopen this issue.

In the meantime, the best suggestion I have is that you try building the cocalc-docker image yourself from source.

mafloh commented 2 years ago

Update: Workaround of Issue 5467 (Evaluate Cell again) does not help. Restarting Kernel works for Python 3 (SageMath) and Python 3 (Ubuntu Linux) but not for Python 3 (ipykernel).

I tested using Brave (Chromium 1.28.106 arm64), Firefox(91.0.2) and Chrome (Version 92.0.4515.159 (Offizieller Build) (arm64).

williamstein commented 2 years ago

Interesting that restarting the kernel works. I'll hopefully fix https://github.com/sagemathinc/cocalc/issues/5467 soon; maybe that's actually responsible for the same problem. We'll see.

williamstein commented 2 years ago

I've fixed https://github.com/sagemathinc/cocalc/issues/5467 and I really don't have any other ideas related to even reproducing this... so I'm closing it. If you do update to the new version of cocald-docker (from right now) and test this, let me know if it works.

mafloh commented 2 years ago

I confirm the issue is solved. Thanks so much!

sagemathinc / cocalc-docker