The storybook path should be with a single slash. Can you tell me what version of Storybook you have in the package.json file? Try to update the Storybook with the prismic sm --add-storybook command.
Are you getting any warnings when you click on the warnings button on the left side? Please follow nuxt.js documentation.
After getting rid of the additional slash for storybook everything worked as expected. Please test it as well on your end and update the documentation.
It should work with http://localhost:6006/. I will surely test on my side and update the documentation accordingly.
Would you please tell me which framework you are using with Slicemachine: Next.js or Nuxt.js? Because tutorial you shared with me it's about nuxt.js.
Feel free to download the current test setup from github. I'll put the visibility on public for a moment.
With this commit I fixed the bug for the storybook url:
I had the exact same line as the documentation, on the sm.json, and it did not work for me, until I've fixed it according to wenedlin.steiner's solution.
I am experiencing the same issue with my next-sm project too. This issue is coming while redirecting from the Slice builder to the Storybook. I will report this issue to my SM team and update the documentation accordingly.
Meantime, you can fix this issue while removing the slash in this path at the end "storybook": "http://localhost:6006/", in sm.json fie (that you are already doing ). Or hit the Storybook server directly http://localhost:6006 in the browser.