ImportError: cannot import name 'contextfilter' from 'jinja2'

[NChongyuan]

Hello,
I am very interested in using your app to analyse my data.
I am using a windows system. I have installed the miniconda3 on my computer and finished the windows_install_script part.
However, I met an error when launching it, as shown in the following:

``C:\Users\hy\PRISMA-main>call C:\Users\hy/Miniconda3/Scripts/activate.bat

(base) C:\Users\hy\PRISMA-main>call conda activate prisma

(prisma) C:\Users\hy\PRISMA-main>cd gui

(prisma) C:\Users\hy\PRISMA-main\gui>voila GUI.ipynb
Traceback (most recent call last):
File "C:\Users\hy\miniconda3\envs\prisma\Scripts\voila-script.py", line 5, in
from voila.app import main
File "C:\Users\hy\miniconda3\envs\prisma\lib\site-packages\voila_init_.py", line 11, in
from .server_extension import load_jupyter_server_extension # noqa
File "C:\Users\hy\miniconda3\envs\prisma\lib\site-packages\voila\server_extension.py", line 19, in
from .handler import VoilaHandler
File "C:\Users\hy\miniconda3\envs\prisma\lib\site-packages\voila\handler.py", line 29, in
from .exporter import VoilaExporter
File "C:\Users\hy\miniconda3\envs\prisma\lib\site-packages\voila\exporter.py", line 15, in
from jinja2 import contextfilter
ImportError: cannot import name 'contextfilter' from 'jinja2' (C:\Users\hy\miniconda3\envs\prisma\lib\site-packages\jinja2_init.py)``

I have tried three installer versions of miniconda3 (python3.7, 3.8 and 3.9) but not working.

Thank you in advance.

[eibfl-dtu]

Hi,

As I see the issue is related to some package PRISMA uses. Unfortunatedly this is not a problem of PRISMA itself, but related to which packages and versions are installed in miniconda, so there is little I can from from PRISMAs side. To try solivng the problem, they suggest to either uninstall jinja and reinstall version 3.0, OR to upgrade another package called nbconvert to its latest version. Hope this helps.

[NChongyuan]

Hi,

I tried both uninstalled the jinja2 then install the version 3.0.0 and update the nbconvert. But it still shows the same error.

(base) C:\Users\hy>conda list nbconvert

packages in environment at C:\Users\hy\miniconda3:

Name Version Build Channel
nbconvert 6.5.0 pyhd8ed1ab_0 https://mirrors.tuna.tsinghua.edu.cn/anaconda/cloud/conda-forge
nbconvert-core 6.5.0 pyhd8ed1ab_0 https://mirrors.tuna.tsinghua.edu.cn/anaconda/cloud/conda-forge
nbconvert-pandoc 6.5.0 pyhd8ed1ab_0 https://mirrors.tuna.tsinghua.edu.cn/anaconda/cloud/conda-forge

(base) C:\Users\hy>conda list jinja2
packages in environment at C:\Users\hy\miniconda3:

Name Version Build Channel
jinja2 3.0.0 pyhd8ed1ab_0 https://mirrors.tuna.tsinghua.edu.cn/anaconda/cloud/conda-forge

[slgotting]

I ran into the same issue when creating a new Python3 Notebook with these versions:

Jinja2==3.1.2
nbconvert==7.0.0

Also I should mention that in a different virtual environment I was successful in creating a new Python3 Notebook which had these versions:

Jinja2==3.0.1
nbconvert==6.4.4

However, upon updating the non-working virtual env to those, it still didn't work.

So for now I'll use the other venv

[clarenznet]

I had the same error and this is how i solved it:
by running updates for jinja2==3.0.3 and nbconvert==6.4.4 which supports jupyterlab server

[shadzic]

Downgrading jinja2 and upgrading nbconvert did not work for me, when I was using python version 3.8.
What worked is to use python version 3.10.6 in a pyenv virtualenv

[jdtibochab]

I had the same error and this is how i solved it: by running updates for jinja2==3.0.3 and nbconvert==6.4.4 which supports jupyterlab server

Thanks! This worked for me

[lofilippini]

Downgrading jinja2 to 3.0.1 worked for me