Jupyter: magic %qtconsole console appears but does not work

Question

Set up python on a new machine (mac air m2) and cannot for the life of my get my qtconsole back. Starting a jupyter notebook and running the magic in the cell causes the qt window to pop up, but no prompt is ever available (pictured below). This used to work just fine and was invaluable for working with notebooks for exploring and iterating on commands before switching back to a cell. It's driving me nuts. Env information below. Any help is greatly appreciated!

enter image description here

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python version: Python 3.10.6

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qtrelated:

conda list | grep qt pyqt 5.15.7
py310h7aaa74b_3 conda-forge pyqt5-sip 12.11.0
py310h0f1eb42_3 conda-forge qt-main 5.15.6
h96bf0dc_0 conda-forge qtconsole 5.4.3
pypi_0 pypi qtpy 2.3.1
pypi_0 pypi

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conda list | grep jupyter

jupyter 1.0.0 pypi_0 pypi jupyter-console 6.6.3 pypi_0 pypi jupyter-contrib-core 0.4.2 pypi_0 pypi jupyter-nbextensions-configurator 0.6.3 pypi_0
pypi jupyter_client 7.3.5 pyhd8ed1ab_0
conda-forge jupyter_contrib_core 0.4.0 pyhd8ed1ab_0 conda-forge jupyter_contrib_nbextensions 0.7.0
pyhd8ed1ab_0 conda-forge jupyter_core 5.3.0
py310hca03da5_0 jupyter_highlight_selected_word 0.2.0
py310hbe9552e_1005 conda-forge jupyter_latex_envs 1.4.6
pyhd8ed1ab_1002 conda-forge jupyter_nbextensions_configurator 0.6.1 pyhd8ed1ab_0 conda-forge jupyter_server 1.19.1
pyhd8ed1ab_0 conda-forge jupyterlab 3.4.7
pyhd8ed1ab_0 conda-forge jupyterlab-widgets 3.0.7
pypi_0 pypi jupyterlab_pygments 0.2.2
pyhd8ed1ab_0 conda-forge jupyterlab_server 2.15.2
pyhd8ed1ab_0 conda-forge

Tried everything. Can't get qtconsole to give me a prompt

Answer 1

update: downgrading jupyter-client to version 6.1.12 solves this. thanks to ishigoya for the solution. https://github.com/jupyter/qtconsole/issues/519#issuecomment-1013822823