Although I previously wrote that "I can't help further"; I was curious.
Here's some suggestions which might get you a bit further.
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Just telling us "From google ..." is not particularly helpful.
I'm guessing a search led you to a forum/blog/etc. which provided the commands you posted.
More information about that may help us to help you.
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I would have started investigating from CPAN.
Devel::IPerl is fairly sparse;
following the link to the distribution, Devel-IPerl, provides a little more.
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In README.md,
I see "ZeroMQ", "Jupyter", and "CPAN" sections; your post indicates that you worked on "ZeroMQ" and "CPAN", but not "Jupyter".
Is that something you need to revisit?
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There's also a link to iperl.
This has virtually no information.
To be honest, that raises a red flag for me and doesn't fill me with confidence: is the code also incomplete?
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The Issues link shows five bugs.
See if there's anything useful for you.
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The Repository link leads to a GitHub page.
That appears to have more information than the CPAN page.
See if there's anything useful here.
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That GitHub page has an Issues link.
This shows 37 open items.
Again, see if there's anything useful for you.
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The cpanm utility has a lot of options.
Some of these may provide useful feedback: --verbose stands out in this regard.