Hey,
Facing the same issue…
I was following the same tutorial.
Since the Shopify Template comes with vite, I am not certain if one can follow that tutorial step by step.
I tried to adapt as much of the code as I could to make it work with vite.
But eventually I ran into the same error that you are facing,
I also tried to run the repository that is linked below the article that you and I followed, but even that did not work out…
If you like, we can try to work together or exchange some knowledge to solve that issue.
Best, Nicola