Gatsby builds local, but fails on Netlify

[perry]

hey @yosuke -

this is the source of the problem:

6:36:26 AM: error "gatsby-node.js" threw an error while running the createPages lifecycle:
6:36:26 AM: Reducers may not dispatch actions.
6:36:26 AM: 
6:36:26 AM: 
6:36:26 AM:   Error: Reducers may not dispatch actions.

Now why this is occurring is a different question - if it runs locally, it may be a version mismatch between the packages that are being used locally vs. on netlify, or it may be a case issue.

Here is some good general debugging information that might be helpful:

This Support Guide contains a ton of useful debugging tips.

[Support Guide] Netlify app builds locally but fails on deploy (case sensitivity)

Last Reviewed By Netlify Support Staff: December 2022 Are you struggling to understand why your project runs locally but errors out with missing files or logs that point toward issues with case when you try and build on Netlify? You are not alone. Often, case (as in: UPPERCASE or lowercase letters in filenames or paths) can cause problems. Here is a guide to understanding how case sensitivity issues present themselves, why they arise, and how you can fix them! 1. Errors you might see Case sens…