# Converting to html and mantaining some of the Nbextensions in the output, html\_ch
**URL:** https://discourse.jupyter.org/t/converting-to-html-and-mantaining-some-of-the-nbextensions-in-the-output-html-ch/9164
**Category:** nbconvert
**Tags:** help-wanted
**Created:** [May 12, 2021, 4:09pm UTC](https://discourse.jupyter.org/t/converting-to-html-and-mantaining-some-of-the-nbextensions-in-the-output-html-ch/9164 "2021-05-12T16:09:11Z")
**Posts on this page:** 1
**Page:** 1
### Author:  [@notebookimprover](https://discourse.jupyter.org/u/notebookimprover)
#### Post date: [May 12, 2021, 4:09pm UTC](https://discourse.jupyter.org/t/converting-to-html-and-mantaining-some-of-the-nbextensions-in-the-output-html-ch/9164/1 "2021-05-12T16:09:11Z")
First of all. I am not sure if this is the right place to ask, probably not but I am hoping I am not the only one in a situation that I believe should be very common to many here.
The problem: I am using Anaconda and I have installed the ‘jupyter\_contrib\_nbextensions’ package in normal Jupyter Notebooks via conda. The good thing that it does all work fine.
Now, I want to keep some of the extension features also when using nbconvert to export to an html file. The read the docs for nbextensions does talk about it but if I am honest they seem very sparse and in any case I am getting some errors that I don’t understand and any help is appreciated.
I have made this very simple notebook and the only extension feature I would like to have when exporting to html is the collapsible headings. So I have tried the following:
jupyter nbconvert --to html\_ch testexport.ipynb
I get the following error:
> [NbConvertApp] WARNING | Config option `kernel_spec_manager_class` not recognized by `NbConvertApp`.
> [NbConvertApp] Converting notebook testexport.ipynb to html\_ch
> Traceback (most recent call last):
> File “C:\Users\MyName\anaconda3\envs\mysqltest\Scripts\jupyter-nbconvert-script.py”, line 10, in
> sys.exit(main())
> File “C:\Users\MyName\anaconda3\envs\mysqltest\lib\site-packages\jupyter\_core\application.py”, line 254, in launch\_instance
> return super(JupyterApp, cls).launch\_instance(argv=argv, \*\*kwargs)
> File “C:\Users\MyName\anaconda3\envs\mysqltest\lib\site-packages\traitlets\config\application.py”, line 845, in launch\_instance
> app.start()
> File “C:\Users\MyName\anaconda3\envs\mysqltest\lib\site-packages\nbconvert\nbconvertapp.py”, line 350, in start
> self.convert\_notebooks()
> File “C:\Users\MyName\anaconda3\envs\mysqltest\lib\site-packages\nbconvert\nbconvertapp.py”, line 524, in convert\_notebooks
> self.convert\_single\_notebook(notebook\_filename)
> File “C:\Users\MyName\anaconda3\envs\mysqltest\lib\site-packages\nbconvert\nbconvertapp.py”, line 489, in convert\_single\_notebook
> output, resources = self.export\_single\_notebook(notebook\_filename, resources, input\_buffer=input\_buffer)
> File “C:\Users\MyName\anaconda3\envs\mysqltest\lib\site-packages\nbconvert\nbconvertapp.py”, line 418, in export\_single\_notebook
> output, resources = self.exporter.from\_filename(notebook\_filename, resources=resources)
> File “C:\Users\MyName\anaconda3\envs\mysqltest\lib\site-packages\nbconvert\exporters\exporter.py”, line 181, in from\_filename
> return self.from\_file(f, resources=resources, \*\*kw)
> File “C:\Users\MyName\anaconda3\envs\mysqltest\lib\site-packages\nbconvert\exporters\exporter.py”, line 199, in from\_file
> return self.from\_notebook\_node(nbformat.read(file\_stream, as\_version=4), resources=resources, \*\*kw)
> File “C:\Users\MyName\anaconda3\envs\mysqltest\lib\site-packages\jupyter\_contrib\_nbextensions\nbconvert\_support\exporter\_inliner.py”, line 32, in from\_notebook\_node
> nb, resources, \*\*kw)
> File “C:\Users\MyName\anaconda3\envs\mysqltest\lib\site-packages\nbconvert\exporters\html.py”, line 119, in from\_notebook\_node
> return super().from\_notebook\_node(nb, resources, \*\*kw)
> File “C:\Users\MyName\anaconda3\envs\mysqltest\lib\site-packages\nbconvert\exporters\templateexporter.py”, line 384, in from\_notebook\_node
> output = self.template.render(nb=nb\_copy, resources=resources)
> File “C:\Users\MyName\anaconda3\envs\mysqltest\lib\site-packages\nbconvert\exporters\templateexporter.py”, line 148, in template
> self.\_template\_cached = self.\_load\_template()
> File “C:\Users\MyName\anaconda3\envs\mysqltest\lib\site-packages\nbconvert\exporters\templateexporter.py”, line 355, in \_load\_template
> return self.environment.get\_template(template\_file)
> File “C:\Users\MyName\anaconda3\envs\mysqltest\lib\site-packages\jinja2\environment.py”, line 883, in get\_template
> return self.\_load\_template(name, self.make\_globals(globals))
> File “C:\Users\MyName\anaconda3\envs\mysqltest\lib\site-packages\jinja2\environment.py”, line 857, in \_load\_template
> template = self.loader.load(self, name, globals)
> File “C:\Users\MyName\anaconda3\envs\mysqltest\lib\site-packages\jinja2\loaders.py”, line 429, in load
> raise TemplateNotFound(name)
> jinja2.exceptions.TemplateNotFound: inliner
> i have tried to look around but could not really find much. Also:
> jupyter --version
> jupyter core : 4.7.1
> jupyter-notebook : 6.3.0
> qtconsole : not installed
> ipython : 7.22.0
> ipykernel : 5.3.4
> jupyter client : 6.1.12
> jupyter lab : not installed
> nbconvert : 6.0.7
> ipywidgets : not installed
> nbformat : 5.1.3
> traitlets : 5.0.5
Is it possible it is an issue with nbconvert? I would be really surprised if so. If I can give more information that is helpful to fix this I am here. It would really important for me, thanks.