Notebook validation failed - notebook with widget- nbformat 5.0.4

[mzarei]

I am getting following error over and over and have no idea what causes it!
Notebook validation failed: {'model_id': '59d3b150e8eb4e44b6c0ce0030dfc2b7', 'version_major': 2, 'version_minor': 0} is not valid under any of the given schemas: { "model_id": "59d3b150e8eb4e44b6c0ce0030dfc2b7", "version_major": 2, "version_minor": 0 }

I see following details when I run this command: jupyter-jupyadmin@labs:~$ conda list

packages in environment at /opt/tljh/user:
Name Version Build Channel
_libgcc_mutex 0.1 conda_forge conda-forge
_openmp_mutex 4.5 0_gnu conda-forge
alembic 1.3.3 pypi_0 pypi
asn1crypto 1.3.0 py36_0 conda-forge
async-generator 1.10 pypi_0 pypi
attrs 19.3.0 pypi_0 pypi
backcall 0.1.0 pypi_0 pypi
bleach 3.1.0 pypi_0 pypi
boost-cpp 1.70.0 h8e57a91_2 conda-forge
bzip2 1.0.8 h516909a_2 conda-forge
ca-certificates 2019.11.28 hecc5488_0 conda-forge
cairo 1.16.0 hfb77d84_1002 conda-forge
certifi 2019.11.28 py36_0 conda-forge
certipy 0.1.3 pypi_0 pypi
cffi 1.13.2 py36h8022711_0 conda-forge
cfitsio 3.470 hb60a0a2_2 conda-forge
chardet 3.0.4 py36_1003 conda-forge
conda 4.8.2 py36_0 conda-forge
conda-env 2.6.0 h36134e3_1
conda-package-handling 1.6.0 py36h516909a_1 conda-forge
cryptography 2.8 py36h72c5cf5_1 conda-forge
curl 7.65.3 hf8cf82a_0 conda-forge
decorator 4.4.1 pypi_0 pypi
defusedxml 0.6.0 pypi_0 pypi
entrypoints 0.3 pypi_0 pypi
expat 2.2.9 he1b5a44_2 conda-forge
fontconfig 2.13.1 h86ecdb6_1001 conda-forge
freetype 2.10.0 he983fc9_1 conda-forge
freexl 1.0.5 h14c3975_1002 conda-forge
gdal 3.0.4 py36hbb6b9fb_0 conda-forge
geos 3.8.0 he1b5a44_0 conda-forge
geotiff 1.5.1 h38872f0_8 conda-forge
gettext 0.19.8.1 hc5be6a0_1002 conda-forge
giflib 5.2.1 h516909a_1 conda-forge
glib 2.58.3 py36h6f030ca_1002 conda-forge
hdf4 4.2.13 hf30be14_1003 conda-forge
hdf5 1.10.5 nompi_h3c11f04_1104 conda-forge
icu 64.2 he1b5a44_1 conda-forge
idna 2.8 py36_1000 conda-forge
importlib-metadata 1.5.0 pypi_0 pypi
ipykernel 5.1.4 pypi_0 pypi
ipython 7.11.1 pypi_0 pypi
ipython-genutils 0.2.0 pypi_0 pypi
ipywidgets 7.4.2 pypi_0 pypi
jedi 0.16.0 pypi_0 pypi
jinja2 2.11.1 pypi_0 pypi
jpeg 9c h14c3975_1001 conda-forge
json-c 0.13.1 h14c3975_1001 conda-forge
jsonschema 3.2.0 pypi_0 pypi
jupyter-client 5.3.4 pypi_0 pypi
jupyter-core 4.6.1 pypi_0 pypi
jupyterhub 1.0.0 pypi_0 pypi
jupyterlab 0.35.4 pypi_0 pypi
jupyterlab-server 0.2.0 pypi_0 pypi
kealib 1.4.10 h58c409b_1005 conda-forge
krb5 1.16.4 h2fd8d38_0 conda-forge
libblas 3.8.0 14_openblas conda-forge
libcblas 3.8.0 14_openblas conda-forge
libcurl 7.65.3 hda55be3_0 conda-forge
libdap4 3.20.4 hd3bb157_0 conda-forge
libedit 3.1.20170329 h6b74fdf_2
libffi 3.2.1 hfc679d8_5 conda-forge
libgcc-ng 9.2.0 h24d8f2e_2 conda-forge
libgdal 3.0.4 h20022a4_0 conda-forge
libgfortran-ng 7.3.0 hdf63c60_4 conda-forge
libgomp 9.2.0 h24d8f2e_2 conda-forge
libiconv 1.15 h516909a_1005 conda-forge
libkml 1.3.0 h4fcabce_1010 conda-forge
liblapack 3.8.0 14_openblas conda-forge
libnetcdf 4.7.3 nompi_h9f9fd6a_101 conda-forge
libopenblas 0.3.7 h5ec1e0e_6 conda-forge
libpng 1.6.37 hed695b0_0 conda-forge
libpq 12.1 hd9ab2ff_0 conda-forge
libspatialite 4.3.0a ha48a99a_1034 conda-forge
libssh2 1.8.2 h22169c7_2 conda-forge
libstdcxx-ng 9.2.0 hdf63c60_2 conda-forge
libtiff 4.1.0 hc3755c2_3 conda-forge
libuuid 2.32.1 h14c3975_1000 conda-forge
libwebp 1.0.2 h56121f0_5 conda-forge
libxcb 1.13 h14c3975_1002 conda-forge
libxml2 2.9.10 hee79883_0 conda-forge
lz4-c 1.8.3 he1b5a44_1001 conda-forge
mako 1.1.1 pypi_0 pypi
markupsafe 1.1.1 pypi_0 pypi
mistune 0.8.4 pypi_0 pypi
nbconvert 5.6.1 pypi_0 pypi
nbformat 5.0.4 pypi_0 pypi
nbgitpuller 0.6.1 pypi_0 pypi
nbresuse 0.3.0 pypi_0 pypi
nbzip 0.1.0 pypi_0 pypi
ncurses 6.1 hfc679d8_2 conda-forge
notebook 5.7.8 pypi_0 pypi
nteract-on-jupyter 2.0.7 pypi_0 pypi
numpy 1.17.5 py36h95a1406_0 conda-forge
oauthlib 3.1.0 pypi_0 pypi
openjpeg 2.3.1 h981e76c_3 conda-forge
openssl 1.1.1d h516909a_0 conda-forge
pamela 1.0.0 pypi_0 pypi
pandocfilters 1.4.2 pypi_0 pypi
parso 0.6.0 pypi_0 pypi
pcre 8.43 he1b5a44_0 conda-forge
pexpect 4.8.0 pypi_0 pypi
pickleshare 0.7.5 pypi_0 pypi
pip 20.0.2 py36_1 conda-forge
pixman 0.38.0 h516909a_1003 conda-forge
poppler 0.67.0 h14e79db_8 conda-forge
poppler-data 0.4.9 1 conda-forge
postgresql 12.1 hc63931a_0 conda-forge
proj 6.3.0 hc80f0dc_0 conda-forge
prometheus-client 0.7.1 pypi_0 pypi
prompt-toolkit 3.0.3 pypi_0 pypi
psutil 5.6.7 pypi_0 pypi
pthread-stubs 0.4 h14c3975_1001 conda-forge
ptyprocess 0.6.0 pypi_0 pypi
pycosat 0.6.3 py36h516909a_1002 conda-forge
pycparser 2.19 py36_1 conda-forge
pygments 2.5.2 pypi_0 pypi
pyopenssl 19.0.0 py36_0 conda-forge
pyrsistent 0.15.7 pypi_0 pypi
pysocks 1.7.1 py36_0 conda-forge
python 3.6.7 h357f687_1006 conda-forge
python-dateutil 2.8.1 pypi_0 pypi
python-editor 1.0.4 pypi_0 pypi
pyzmq 18.1.1 pypi_0 pypi
readline 8.0 hf8c457e_0 conda-forge
requests 2.22.0 py36_1 conda-forge
ruamel_yaml 0.15.80 py36h516909a_1000 conda-forge
send2trash 1.5.0 pypi_0 pypi
setuptools 45.1.0 py36_0 conda-forge
six 1.14.0 py36_0 conda-forge
sqlalchemy 1.3.13 pypi_0 pypi
sqlite 3.30.1 hcee41ef_0 conda-forge
tbb 2018.0.5 h2d50403_0 conda-forge
terminado 0.8.3 pypi_0 pypi
testpath 0.4.4 pypi_0 pypi
tiledb 1.7.0 hcde45ca_2 conda-forge
tk 8.6.10 hed695b0_0 conda-forge
tornado 5.1.1 pypi_0 pypi
tqdm 4.42.0 py_0 conda-forge
traitlets 4.3.3 pypi_0 pypi
tzcode 2019a h516909a_1002 conda-forge
urllib3 1.25.7 py36_0 conda-forge
wcwidth 0.1.8 pypi_0 pypi
webencodings 0.5.1 pypi_0 pypi
wheel 0.34.2 py36_0 conda-forge
widgetsnbextension 3.4.2 pypi_0 pypi
xerces-c 3.2.2 h8412b87_1004 conda-forge
xorg-kbproto 1.0.7 h14c3975_1002 conda-forge
xorg-libice 1.0.10 h516909a_0 conda-forge
xorg-libsm 1.2.3 h84519dc_1000 conda-forge
xorg-libx11 1.6.9 h516909a_0 conda-forge
xorg-libxau 1.0.9 h14c3975_0 conda-forge
xorg-libxdmcp 1.1.3 h516909a_0 conda-forge
xorg-libxext 1.3.4 h516909a_0 conda-forge
xorg-libxrender 0.9.10 h516909a_1002 conda-forge
xorg-renderproto 0.11.1 h14c3975_1002 conda-forge
xorg-xextproto 7.3.0 h14c3975_1002 conda-forge
xorg-xproto 7.0.31 h14c3975_1007 conda-forge
xz 5.2.4 h14c3975_1001 conda-forge
yaml 0.2.2 h516909a_1 conda-forge
zipp 2.1.0 pypi_0 pypi
zlib 1.2.11 h516909a_1006 conda-forge
zstd 1.4.4 h3b9ef0a_1 conda-forge

Also, checking the notebook metadata I see following information:

{
  "anaconda-cloud": {},
  "kernelspec": {
    "name": "python3",
    "display_name": "Python 3",
    "language": "python"
  },
  "language_info": {
    "name": "python",
    "version": "3.6.7",
    "mimetype": "text/x-python",
    "codemirror_mode": {
      "name": "ipython",
      "version": 3
    },
    "pygments_lexer": "ipython3",
    "nbconvert_exporter": "python",
    "file_extension": ".py"
  },
  "widgets": {
    "state": {
      "0fe728eba2e6465c9b452d2eb017fee1": {
        "views": [
          {
            "cell_index": 26
          }
        ]
      },
      "282b6d570ecd448d9ad1c8ac5ebf7b0f": {
        "views": [
          {
            "cell_index": 40
          }
        ]
      }
    },
    "version": "1.2.0"
  }
}

[MSeal]

I believe this is the same issue as #160 with the same resolution path.

[mzarei]

I believe this is the same issue as #160 with the same resolution path.

Actually, I already check that. But unfortunately, I don't understand the solution! I am not able to save the notebook as it shows the error. So, I don't know how to update it's metadata correctly!

So, no idea where I can change these values or check it:
"version_major": 2, "version_minor": 0

[MSeal]

If you load the notebook in jupyter lab instead of jupyter classic it should upgrade the file format for you. Otherwise, you can try editing the ipynb notebook with a text editor and changing the version line referenced by hand (this may work, but if there's structural differences your notebook won't load either).

Worse case, install an older version of nbformat, copy the cell contents to a new new notebook, save the new notebook, upgrade nbformat back, and replace the old file with the new one.

[mzarei]

I failed to open the notebook in jupyter lab, as after I installed jupyterlab using the terminal in my jupyter hub, nothing worked! When I run jupyter lab in the jupyter hub terminal it didn't open the browser! I assume because I install the jupyter hub in a different server, but it was trying to load it like as a localhost! The I got error 500 internal server error after installing jupyterlab when I tried to open any notebook. I had to run this command pip3 install --upgrade --user nbconvert to fix things. About jupyter lab, I feel I am making a silly mistake, which I haven't sort out yet!

Anyway, long story short, replacing "nbformat_minor": 1 with "nbformat_minor": 4 manually fixed the issue. Now I don't get the error and I can save the notebook or print it as a pdf.

Thanks :)

[DavidJVitale]

As a short-term workaround, you could downgrade your nbformat to <5 by running the following conda command:

conda install "nbformat <5"

[youweiliang]

@mzarei Changing "nbformat_minor": 1 to"nbformat_minor": 4 resolved the same issue for me. Thanks.

[ofekp]

@youweiliang's answer did the trick for me.
To open ipynb file as a text file in VS Code I used this answer from SO.

[infontology]

I did Duplicate from the Home page / notebook list, and the duplicate passed validation, so this solved my issue.

[abhimanyu-bitsgoa]

Hi @MSeal
I was facing a similar issue. Updating the notebook nbformat_minor version to 5 fixed it for me.

Can you please explain why this was happening and why this fixes the issue?

Thanks a lot in advance.