How to use nbviewer in jupyterhub ?

[caiquanyou]

I try the code in this home page , but I don't know how to access the ipynb files , where is the /services/nbviewer path locates?
Code below:

c.JupyterHub.services = [
{
'name': 'nbviewer',
'url':'http://127.0.0.1:9000',
'command': ['python', '-m', 'nbviewer'],
}`
And warnning:
[W 2021-11-18 02:33:23.845 JupyterHub app:2098] Cannot connect to managed service public at http://127.0.0.1:9000

I am confused about wher to store the .ipynb files which I want to display?

[caiquanyou]

thanks， it work now,but get ner problems , the page below:
image
image
1404×1197 100 KB

and the warning is like:
[I 2021-11-25 09:24:51.654 JupyterHub log:189] 200 GET /hub/api/authorizations/cookie/jupyterhub-services/[secret] (nbviewer@10.0.19.34) 31.98ms
swarmhub_jupyter_cds.1.o7e8vjeiuqdw@c5 | [E 2021-11-25 09:24:51.882 tornado.general web:2990] Could not open static file ‘’
swarmhub_jupyter_cds.1.o7e8vjeiuqdw@c5 | [E 2021-11-25 09:24:51.886 NBViewer web:1219] Uncaught exception in write_error
swarmhub_jupyter_cds.1.o7e8vjeiuqdw@c5 | Traceback (most recent call last):
swarmhub_jupyter_cds.1.o7e8vjeiuqdw@c5 | File “/usr/local/lib/python3.8/dist-packages/tornado/web.py”, line 1704, in _execute
swarmhub_jupyter_cds.1.o7e8vjeiuqdw@c5 | result = await result
swarmhub_jupyter_cds.1.o7e8vjeiuqdw@c5 | File “/usr/local/lib/python3.8/dist-packages/tornado/web.py”, line 2576, in get
swarmhub_jupyter_cds.1.o7e8vjeiuqdw@c5 | self.absolute_path = self.validate_absolute_path(self.root, absolute_path)
swarmhub_jupyter_cds.1.o7e8vjeiuqdw@c5 | File “/usr/local/lib/python3.8/dist-packages/jupyter_server/base/handlers.py”, line 860, in validate_absolute_path
swarmhub_jupyter_cds.1.o7e8vjeiuqdw@c5 | raise web.HTTPError(404)
swarmhub_jupyter_cds.1.o7e8vjeiuqdw@c5 | tornado.web.HTTPError: HTTP 404: Not Found
swarmhub_jupyter_cds.1.o7e8vjeiuqdw@c5 |
swarmhub_jupyter_cds.1.o7e8vjeiuqdw@c5 | During handling of the above exception, another exception occurred:
swarmhub_jupyter_cds.1.o7e8vjeiuqdw@c5 |
swarmhub_jupyter_cds.1.o7e8vjeiuqdw@c5 | Traceback (most recent call last):
swarmhub_jupyter_cds.1.o7e8vjeiuqdw@c5 | File “/usr/local/lib/python3.8/dist-packages/tornado/web.py”, line 1217, in send_error
swarmhub_jupyter_cds.1.o7e8vjeiuqdw@c5 | self.write_error(status_code, **kwargs)
swarmhub_jupyter_cds.1.o7e8vjeiuqdw@c5 | File “/usr/local/lib/python3.8/dist-packages/jupyter_server/base/handlers.py”, line 590, in write_error
swarmhub_jupyter_cds.1.o7e8vjeiuqdw@c5 | html = self.render_template("%s.html" % status_code, **ns)
swarmhub_jupyter_cds.1.o7e8vjeiuqdw@c5 | File “/usr/local/lib/python3.8/dist-packages/jupyter_server/base/handlers.py”, line 521, in render_template
swarmhub_jupyter_cds.1.o7e8vjeiuqdw@c5 | return template.render(**ns)
swarmhub_jupyter_cds.1.o7e8vjeiuqdw@c5 | File “/usr/local/lib/python3.8/dist-packages/jinja2/environment.py”, line 1304, in render
swarmhub_jupyter_cds.1.o7e8vjeiuqdw@c5 | self.environment.handle_exception()
swarmhub_jupyter_cds.1.o7e8vjeiuqdw@c5 | File “/usr/local/lib/python3.8/dist-packages/jinja2/environment.py”, line 925, in handle_exception
swarmhub_jupyter_cds.1.o7e8vjeiuqdw@c5 | raise rewrite_traceback_stack(source=source)
swarmhub_jupyter_cds.1.o7e8vjeiuqdw@c5 | File “/usr/local/lib/python3.8/dist-packages/nbviewer/templates/404.html”, line 1, in top-level template code
swarmhub_jupyter_cds.1.o7e8vjeiuqdw@c5 | {% extends “error.html” %}
swarmhub_jupyter_cds.1.o7e8vjeiuqdw@c5 | File “/usr/local/lib/python3.8/dist-packages/nbviewer/templates/error.html”, line 1, in top-level template code
swarmhub_jupyter_cds.1.o7e8vjeiuqdw@c5 | {% extends “layout.html” %}
swarmhub_jupyter_cds.1.o7e8vjeiuqdw@c5 | File “/usr/local/lib/python3.8/dist-packages/nbviewer/templates/layout.html”, line 89, in top-level template code
swarmhub_jupyter_cds.1.o7e8vjeiuqdw@c5 |
swarmhub_jupyter_cds.1.o7e8vjeiuqdw@c5 | File “/usr/local/lib/python3.8/dist-packages/jinja2/utils.py”, line 84, in from_obj
swarmhub_jupyter_cds.1.o7e8vjeiuqdw@c5 | if hasattr(obj, “jinja_pass_arg”):
swarmhub_jupyter_cds.1.o7e8vjeiuqdw@c5 | jinja2.exceptions.UndefinedError: ‘from_base’ is undefined
swarmhub_jupyter_cds.1.o7e8vjeiuqdw@c5 | [W 2021-11-25 09:24:51.888 NBViewer log:57] 404 GET /services/nbviewer/static/build/styles.css (10.0.0.2) 27.48ms referer=“http://127.0.0.1:16667/services/nbviewer/” user-agent=“Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/96.0.4664.45 Safari/537.36”
swarmhub_jupyter_cds.1.o7e8vjeiuqdw@c5 | [E 2021-11-25 09:24:51.892 NBViewer web:1219] Uncaught exception in write_error
swarmhub_jupyter_cds.1.o7e8vjeiuqdw@c5 | Traceback (most recent call last):
swarmhub_jupyter_cds.1.o7e8vjeiuqdw@c5 | File “/usr/local/lib/python3.8/dist-packages/tornado/web.py”, line 1704, in _execute
swarmhub_jupyter_cds.1.o7e8vjeiuqdw@c5 | result = await result
swarmhub_jupyter_cds.1.o7e8vjeiuqdw@c5 | File “/usr/local/lib/python3.8/dist-packages/tornado/web.py”, line 2576, in get
swarmhub_jupyter_cds.1.o7e8vjeiuqdw@c5 | self.absolute_path = self.validate_absolute_path(self.root, absolute_path)
swarmhub_jupyter_cds.1.o7e8vjeiuqdw@c5 | File “/usr/local/lib/python3.8/dist-packages/jupyter_server/base/handlers.py”, line 860, in validate_absolute_path
swarmhub_jupyter_cds.1.o7e8vjeiuqdw@c5 | raise web.HTTPError(404)
swarmhub_jupyter_cds.1.o7e8vjeiuqdw@c5 | tornado.web.HTTPError: HTTP 404: Not Found