Hi, I am aware this issue exists but for some reason I still get the error. I have tried to create a new conda environment using: ```conda create -p /project/bp_project_alexnet python==3.11 jupyter``` but still no luck. Additionally, I have tried these commands: ```pip install --upgrade jupyterlab jupyterlab_server jupyter_server traitlets nbformat``` And even downgrading ```jsonschema```: ```conda install -c conda-forge jsonschema==4.19.2``` Is there anything I am missing? I am using Python 3.11 and have a fresh conda environment at the moment. Error message: ``` Traceback (most recent call last): File "/project/bp_project_alexnet/bin/jupyter-notebook", line 6, in <module> from notebook.app import main File "/project/bp_project_alexnet/lib/python3.11/site-packages/notebook/app.py", line 17, in <module> from jupyter_server.serverapp import flags File "/project/bp_project_alexnet/lib/python3.11/site-packages/jupyter_server/serverapp.py", line 40, in <module> from jupyter_events.logger import EventLogger File "/project/bp_project_alexnet/lib/python3.11/site-packages/jupyter_events/__init__.py", line 3, in <module> from .logger import EVENTS_METADATA_VERSION, EventLogger File "/project/bp_project_alexnet/lib/python3.11/site-packages/jupyter_events/logger.py", line 20, in <module> from .schema import SchemaType File "/project/bp_project_alexnet/lib/python3.11/site-packages/jupyter_events/schema.py", line 18, in <module> from .validators import draft7_format_checker, validate_schema File "/project/bp_project_alexnet/lib/python3.11/site-packages/jupyter_events/validators.py", line 46, in <module> JUPYTER_EVENTS_SCHEMA_VALIDATOR = Draft7Validator( ^^^^^^^^^^^^^^^^ TypeError: create.<locals>.Validator.__init__() got an unexpected keyword argument 'registry' ``` ``` dependencies: - _libgcc_mutex=0.1=conda_forge - _openmp_mutex=4.5=2_gnu - anyio=4.7.0=pyhd8ed1ab_0 - argon2-cffi=23.1.0=pyhd8ed1ab_1 - argon2-cffi-bindings=21.2.0=py311h9ecbd09_5 - arrow=1.3.0=pyhd8ed1ab_1 - asttokens=3.0.0=pyhd8ed1ab_1 - async-lru=2.0.4=pyhd8ed1ab_1 - attrs=24.3.0=pyh71513ae_0 - babel=2.16.0=pyhd8ed1ab_1 - beautifulsoup4=4.12.3=pyha770c72_1 - bleach=6.2.0=pyhd8ed1ab_1 - brotli-python=1.1.0=py311hfdbb021_2 - bzip2=1.0.8=h4bc722e_7 - ca-certificates=2024.12.14=hbcca054_0 - cached-property=1.5.2=hd8ed1ab_1 - cached_property=1.5.2=pyha770c72_1 - certifi=2024.12.14=pyhd8ed1ab_0 - cffi=1.17.1=py311hf29c0ef_0 - charset-normalizer=3.4.0=pyhd8ed1ab_1 - comm=0.2.2=pyhd8ed1ab_1 - debugpy=1.8.11=py311hfdbb021_0 - decorator=5.1.1=pyhd8ed1ab_1 - defusedxml=0.7.1=pyhd8ed1ab_0 - entrypoints=0.4=pyhd8ed1ab_1 - exceptiongroup=1.2.2=pyhd8ed1ab_1 - executing=2.1.0=pyhd8ed1ab_1 - fqdn=1.5.1=pyhd8ed1ab_1 - h11=0.14.0=pyhd8ed1ab_1 - h2=4.1.0=pyhd8ed1ab_1 - hpack=4.0.0=pyhd8ed1ab_1 - httpcore=1.0.7=pyh29332c3_1 - httpx=0.28.1=pyhd8ed1ab_0 - hyperframe=6.0.1=pyhd8ed1ab_1 - idna=3.10=pyhd8ed1ab_1 - importlib-metadata=8.5.0=pyha770c72_1 - importlib_resources=6.4.5=pyhd8ed1ab_1 - ipykernel=6.29.5=pyh3099207_0 - ipython=8.31.0=pyh707e725_0 - ipywidgets=8.1.5=pyhd8ed1ab_1 - isoduration=20.11.0=pyhd8ed1ab_1 - jedi=0.19.2=pyhd8ed1ab_1 - jinja2=3.1.5=pyhd8ed1ab_0 - json5=0.10.0=pyhd8ed1ab_1 - jsonpointer=3.0.0=py311h38be061_1 - jsonschema=4.19.2=pyhd8ed1ab_0 - jsonschema-specifications=2024.10.1=pyhd8ed1ab_1 - jsonschema-with-format-nongpl=4.19.2=pyhd8ed1ab_0 - jupyter=1.1.1=pyhd8ed1ab_1 - jupyter-lsp=2.2.5=pyhd8ed1ab_1 - jupyter_client=8.6.3=pyhd8ed1ab_1 - jupyter_console=6.6.3=pyhd8ed1ab_1 - jupyter_core=5.7.2=pyh31011fe_1 - jupyter_events=0.11.0=pyhd8ed1ab_0 - jupyter_server=2.15.0=pyhd8ed1ab_0 - jupyter_server_terminals=0.5.3=pyhd8ed1ab_1 - jupyterlab=4.3.4=pyhd8ed1ab_0 - jupyterlab_pygments=0.3.0=pyhd8ed1ab_2 - jupyterlab_server=2.27.3=pyhd8ed1ab_1 - jupyterlab_widgets=3.0.13=pyhd8ed1ab_1 - keyutils=1.6.1=h166bdaf_0 - krb5=1.21.3=h659f571_0 - ld_impl_linux-64=2.43=h712a8e2_2 - libedit=3.1.20191231=he28a2e2_2 - libffi=3.4.2=h7f98852_5 - libgcc=14.2.0=h77fa898_1 - libgcc-ng=14.2.0=h69a702a_1 - libgomp=14.2.0=h77fa898_1 - liblzma=5.6.3=hb9d3cd8_1 - liblzma-devel=5.6.3=hb9d3cd8_1 - libnsl=2.0.1=hd590300_0 - libsodium=1.0.20=h4ab18f5_0 - libsqlite=3.47.2=hee588c1_0 - libstdcxx=14.2.0=hc0a3c3a_1 - libstdcxx-ng=14.2.0=h4852527_1 - libuuid=2.38.1=h0b41bf4_0 - libzlib=1.3.1=hb9d3cd8_2 - markupsafe=3.0.2=py311h2dc5d0c_1 - matplotlib-inline=0.1.7=pyhd8ed1ab_1 - mistune=3.0.2=pyhd8ed1ab_1 - nbclient=0.10.2=pyhd8ed1ab_0 - nbconvert-core=7.16.4=pyhff2d567_2 - nbformat=5.10.4=pyhd8ed1ab_1 - ncurses=6.5=he02047a_1 - nest-asyncio=1.6.0=pyhd8ed1ab_1 - notebook=7.3.2=pyhd8ed1ab_0 - notebook-shim=0.2.4=pyhd8ed1ab_1 - openssl=3.4.0=hb9d3cd8_0 - overrides=7.7.0=pyhd8ed1ab_1 - packaging=24.2=pyhd8ed1ab_2 - pandocfilters=1.5.0=pyhd8ed1ab_0 - parso=0.8.4=pyhd8ed1ab_1 - pexpect=4.9.0=pyhd8ed1ab_1 - pickleshare=0.7.5=pyhd8ed1ab_1004 - pip=24.3.1=pyh8b19718_2 - pkgutil-resolve-name=1.3.10=pyhd8ed1ab_2 - platformdirs=4.3.6=pyhd8ed1ab_1 - prometheus_client=0.21.1=pyhd8ed1ab_0 - prompt-toolkit=3.0.48=pyha770c72_1 - prompt_toolkit=3.0.48=hd8ed1ab_1 - psutil=6.1.0=py311h9ecbd09_0 - ptyprocess=0.7.0=pyhd8ed1ab_1 - pure_eval=0.2.3=pyhd8ed1ab_1 - pycparser=2.22=pyh29332c3_1 - pygments=2.18.0=pyhd8ed1ab_1 - pysocks=1.7.1=pyha55dd90_7 - python=3.11.0=he550d4f_1_cpython - python-dateutil=2.9.0.post0=pyhff2d567_1 - python-fastjsonschema=2.21.1=pyhd8ed1ab_0 - python-json-logger=2.0.7=pyhd8ed1ab_0 - python_abi=3.11=5_cp311 - pytz=2024.2=pyhd8ed1ab_1 - pyyaml=6.0.2=py311h9ecbd09_1 - pyzmq=26.2.0=py311h7deb3e3_3 - readline=8.2=h8228510_1 - referencing=0.35.1=pyhd8ed1ab_1 - requests=2.32.3=pyhd8ed1ab_1 - rfc3339-validator=0.1.4=pyhd8ed1ab_1 - rfc3986-validator=0.1.1=pyh9f0ad1d_0 - rpds-py=0.22.3=py311h9e33e62_0 - send2trash=1.8.3=pyh0d859eb_1 - setuptools=75.6.0=pyhff2d567_1 - six=1.17.0=pyhd8ed1ab_0 - sniffio=1.3.1=pyhd8ed1ab_1 - soupsieve=2.5=pyhd8ed1ab_1 - stack_data=0.6.3=pyhd8ed1ab_1 - terminado=0.18.1=pyh0d859eb_0 - tinycss2=1.4.0=pyhd8ed1ab_0 - tk=8.6.13=noxft_h4845f30_101 - tomli=2.2.1=pyhd8ed1ab_1 - tornado=6.4.2=py311h9ecbd09_0 - traitlets=5.14.3=pyhd8ed1ab_1 - types-python-dateutil=2.9.0.20241206=pyhd8ed1ab_0 - typing-extensions=4.12.2=hd8ed1ab_1 - typing_extensions=4.12.2=pyha770c72_1 - typing_utils=0.1.0=pyhd8ed1ab_1 - tzdata=2024b=hc8b5060_0 - uri-template=1.3.0=pyhd8ed1ab_1 - urllib3=2.3.0=pyhd8ed1ab_0 - wcwidth=0.2.13=pyhd8ed1ab_1 - webcolors=24.11.1=pyhd8ed1ab_0 - webencodings=0.5.1=pyhd8ed1ab_3 - websocket-client=1.8.0=pyhd8ed1ab_1 - wheel=0.45.1=pyhd8ed1ab_1 - widgetsnbextension=4.0.13=pyhd8ed1ab_1 - xz=5.6.3=hbcc6ac9_1 - xz-gpl-tools=5.6.3=hbcc6ac9_1 - xz-tools=5.6.3=hb9d3cd8_1 - yaml=0.2.5=h7f98852_2 - zeromq=4.3.5=h3b0a872_7 - zipp=3.21.0=pyhd8ed1ab_1 - zstandard=0.23.0=py311hbc35293_1 - zstd=1.5.6=ha6fb4c9_0 ``` Any help would be appreciated. Thanks. Neville