# Troubleshooting JSON:API / JupyterLite **URL:** \ **Category:** Hosting farmOS\ **Created:** [March 22, 2022, 5:29pm UTC](https://farmos.discourse.group/t/troubleshooting-json-api-jupyterlite/1184 "2022-03-22T17:29:19Z")\ **Posts on this page:** 8\ **Page:** 1
**Author:** ![Farmy](https://avatars.discourse-cdn.com/v4/letter/f/eada6e/32.png) [@Farmy](https://farmos.discourse.group/u/Farmy)\ **Post date:** [March 22, 2022, 5:29pm UTC](https://farmos.discourse.group/t/troubleshooting-json-api-jupyterlite/1184/1 "2022-03-22T17:29:19Z")
Continuing the troubleshooting discussion from [Share your JupyterLite Examples](https://farmos.discourse.group/t/share-your-jupyterlite-examples/1134): **Issue:** Executing the JupyterLite example “animal\_csv\_import.ipynb” causes an _OSError: Request for [https://localhost/api/taxonomy\_term/animal\_type](https://localhost/api/taxonomy_term/animal_type) failed with status 500: 500 Service unavailable (with message)_ ---
**Author:** ![Farmy](https://avatars.discourse-cdn.com/v4/letter/f/eada6e/32.png) [@Farmy](https://farmos.discourse.group/u/Farmy)\ **Post date:** [March 22, 2022, 5:43pm UTC](https://farmos.discourse.group/t/troubleshooting-json-api-jupyterlite/1184/2 "2022-03-22T17:43:31Z")
The traceback log of “animal\_csv\_import.ipynb” in JupyterLite reports a failure in /lib/python3.9 (the Pyolite kernel of JupyterLite?), but a few lines below there is a reference to python 3.8 which is my default python installation. Is there a conflict? ```auto File /lib/python3.9/site-packages/pyodide/http.py:139, in FetchResponse.json(self, **kwargs) 133 async def json(self, **kwargs) -> Any: 134 """Return the response body as a Javascript JSON object. 135 136 Any keyword arguments are passed to `json.loads 137 `_. 138 """ --> 139 self._raise_if_failed() ``` ---
**Author:** ![Farmy](https://avatars.discourse-cdn.com/v4/letter/f/eada6e/32.png) [@Farmy](https://farmos.discourse.group/u/Farmy)\ **Post date:** [March 22, 2022, 8:57pm UTC](https://farmos.discourse.group/t/troubleshooting-json-api-jupyterlite/1184/3 "2022-03-22T20:57:50Z")
@Symbioquine I’m one step further now. If I remove the bold part below from the HTTP request, then it works. Do you have an idea what the root cause might be? curl -k ‘[https://localhost/api/taxonomy\_term/animal\_type](https://localhost/api/taxonomy_term/animal_type)’ -X POST -H ‘User-Agent: Mozilla/5.0 (X11; Ubuntu; Linux x86\_64; rv:98.0) Gecko/20100101 Firefox/98.0’ -H ‘Accept: _/_’ -H ‘Accept-Language: de,en-US;q=0.7,en;q=0.3’ -H ‘Accept-Encoding: gzip, deflate, br’ -H ‘Referer: [https://localhost/jupyterlite/lab/index.html](https://localhost/jupyterlite/lab/index.html)’ -H ‘Content-type: application/vnd.api+json’ -H ‘X-CSRF-Token: —OMITTED—’ _**-H ‘Origin: [https://localhost](https://localhost)’ -H ‘Connection: keep-alive’ -H ‘Cookie: —OMITTED—; jupyterliteDrupalBasePath=/’ -H ‘Sec-Fetch-Dest: empty’ -H ‘Sec-Fetch-Mode: cors’ -H 'Sec-Fetch-Site: same-origin’**_ --data-raw ‘{“data”: {“type”: “taxonomy\_term–animal\_type”, “attributes”: {“name”: “Sheep”}}}’ ---
**Author:** ![Symbioquine](https://yyz2.discourse-cdn.com/free1/user_avatar/farmos.discourse.group/symbioquine/32/284_2.png) [@Symbioquine](https://farmos.discourse.group/u/Symbioquine)\ **Post date:** [March 23, 2022, 2:20am UTC](https://farmos.discourse.group/t/troubleshooting-json-api-jupyterlite/1184/4 "2022-03-23T02:20:49Z")
I don’t see anything obviously wrong. That’s an interesting clue about removing those headers, but I don’t have a ready hypothesis about why those would be a problem. I just checked and my requests (which are working) also include similar headers to those. Are you willing to share your NGINX reverse proxy configuration? ---
**Author:** ![Farmy](https://avatars.discourse-cdn.com/v4/letter/f/eada6e/32.png) [@Farmy](https://farmos.discourse.group/u/Farmy)\ **Post date:** [March 23, 2022, 2:50pm UTC](https://farmos.discourse.group/t/troubleshooting-json-api-jupyterlite/1184/5 "2022-03-23T14:50:46Z")
@Symbioquine I’m curious. Here is the nginx.conf : ```auto events {} http { server { listen 80 default_server; listen [::]:80 default_server; server_name _; return 301 https://$host$request_uri; } server { server_name localhost; listen 443 ssl; ssl_certificate /etc/nginx/ssl/openssl.crt; ssl_certificate_key /etc/nginx/ssl/openssl.key; location / { proxy_set_header Host $http_host; proxy_set_header X-Real-IP $remote_addr; proxy_set_header X-Forwarded-Host $http_host; proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for; proxy_set_header X-Forwarded-Proto $scheme; proxy_buffer_size 128k; proxy_buffers 4 256k; proxy_busy_buffers_size 256k; proxy_pass http://www; } } } ``` I followed exactly the description of configuring Local HTTPS here: > **[Local HTTPS](https://farmos.org/development/environment/https/)** > > farmOS is a free and open source web-based application for farm management, planning, and record keeping. ---
**Author:** ![Farmy](https://avatars.discourse-cdn.com/v4/letter/f/eada6e/32.png) [@Farmy](https://farmos.discourse.group/u/Farmy)\ **Post date:** [March 23, 2022, 4:00pm UTC](https://farmos.discourse.group/t/troubleshooting-json-api-jupyterlite/1184/6 "2022-03-23T16:00:18Z")
I removed SSL / HTTPS. No change. ☹ ---
**Author:** ![Farmy](https://avatars.discourse-cdn.com/v4/letter/f/eada6e/32.png) [@Farmy](https://farmos.discourse.group/u/Farmy)\ **Post date:** [March 25, 2022, 8:31pm UTC](https://farmos.discourse.group/t/troubleshooting-json-api-jupyterlite/1184/7 "2022-03-25T20:31:13Z")
Problem solved! 🙂 Solution: JSON API resp. JupyterLite can be used only, if no user is concurrently logged in in FarmOS. ---
**Author:** ![Symbioquine](https://yyz2.discourse-cdn.com/free1/user_avatar/farmos.discourse.group/symbioquine/32/284_2.png) [@Symbioquine](https://farmos.discourse.group/u/Symbioquine)\ **Post date:** [March 26, 2022, 2:09am UTC](https://farmos.discourse.group/t/troubleshooting-json-api-jupyterlite/1184/8 "2022-03-26T02:09:26Z")
> Solution: JSON API resp. JupyterLite can be used only, if no user is concurrently logged in in FarmOS. Hmmm, that’s strange. I just did a bit of testing and I can’t reproduce that behavior. (I tested with multiple separate users and the same user from a separate browser session while re-running the example in JupyterLite which retrieves/creates the animal taxonomy - it worked every time.)