Run or debug a notebook on remote Spark compute

Hi kjellvs ,
Thanks for using Fabric Community.

You should use the synapse-spark-kernel for your notebook code to run without any error.
I have attached the screenshot for your reference.

While adding the Synapse VS code extension into your Visual Studio, there are some prerequisites which have to be installed in your local desktop. If you install those prerequisites successfully, then extension will auto create the synapse-spark-kernel and install pyspark and other packages. You will able to find this environment after installing all the prerequisites.

Maybe you have installed conda, but forgot to set the environment variable.

When you activate the extension, it will show the initialization progress and output in output channel like this:

Please refer this document for installing the prerequisites : Link1

Hope this helps. Please let us know if you have any further queries.