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Jupyter 7 – Lab not launching > Update

Back in 2017 I wrote a post to support users that experienced issues launching a Jupyter notebook in the (then new) MacOS 10.12.5. I am encountering a similar-ish issue after installing Sonoma and Jupyter 7.0, but it is not quite the same. The original post is here:

In this case, the browser is launched, but not rendering is shown in Safari. I am not sure if this is an issue with Sonoma, or indeed with the Jupyter Lab. I applied a similar fix to my new issue, and force the browser to be Chrome (I know, I know…)

Since I wrote the original post the architecture of Jupyter has changed a bit and the commands are different. I have updated the post from 2017 to reflect this (and leave the old commands there for posterity). In the spirit of transparency, I am adding the new commands here:

  • Open a terminal and type the following command:
jupyter-lab --generate-config
  • In the terminal navigate to the place where the configuration file is. In other words, type the following:
cd ~/.jupyter/
  • Open the file and look for a line that says:
# c.ServerApp.browser = ''

Change the line as follows: Delete the hash and write the name of your browser in between the quotes.

For SAFARI it would look as follows

c.ServerApp.browser = 'safari'

If you are a CHROME supporter, the command looks a tad bit more complicated:

c.ServerApp.browser = 'open -a /Applications/Google\ %s'
  • Save the script and close it.
  • Restart your terminal and launch Jupyter…